+ Create an Effect Monster +

[Flash Flyer - Sakura]

Rules of engagement.

• Person makes prompt specifying 2 of the parameters below.
  
• Next person does it and then makes another prompt.
  
• Rinse and repeat.
  

Parameters.

Name
Attribute
Level/Rank/Link Rating
Type
ATK/DEF
Pendulum Scales
General idea

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First card:

Legacy support for any archetype in AGM (can be user created or imports)

[Draconus297]

Darkhorse Jumper
DARK - Level 1 - Beast/Tuner/Effect - 200/0
You can pay 1000 LP (Quick Effect): Special Summon this card from your hand. You can only Summon 1 "Darkhorse Jumper" per turn this way. If Summoned this way, you can Set 1 "Darkhorse" Spell/Trap card directly from your Deck (this Set card can be activated this turn). If all monsters your opponent controls are Special Summoned monsters, this card can attack your opponent directly. If this card inflicts battle damage to your opponent: You can Special Summon 1 Level 4 or lower "Darkhorse" monster from your Deck, except "Darkhorse Jumper".

One of my worst archetypes ever, finally able to kinda-sorta make plays.

Make a monster that, without self-banishing or HOPT, can revive itself while still not being busted.

[Flash Flyer - Sakura]

(Probably gonna get chewed out for copy/pasting an old card I already made [somewhat], but it does work in some capacity)

Amy the Hedgehog Striker
Link 2 | EARTH | Beast-Warrior | Link | Effect
1700
N W
2 monsters with different names
Monsters this card points to gain 300 ATK/DEF, also if they battle an opponent's monster, double any battle damage they inflict to your opponent. If this card is destroyed by battle or card effect and sent to the GY: You can pay 800 LP; Special Summon it.

*gets shot for making a Sonic character into a Yugioh card*

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Make an Effect counterpart to any non-Effect Special Summon only monster (i.e. old Rituals, Fusion, Synchro, Xyz, Links). If you need an example, see Citadel/Stronghold Whale.

[Draconus297]

Karbonala Knight
EARTH - Level 4 - Warrior/Effect - 1500/1200
If a Warrior monster(s) you control is destroyed: You can Special Summon this card from your hand or Graveyard. You can only activate this effect of "Karbonala Knight" once per turn. If this card attacks your opponent's Special Summoned monster: Reduce the ATK of the attack target by 400, and increase this card's ATK by 400. If this card destroys your opponent's monster by battle, you can target 1 Level 5 or lower Warrior monster in your Graveyard: Special Summon that target in Defense Position. Once per turn, during the Battle Phase, you can, immediately after this effect resolves: Fusion, Synchro, Xyz, or Link Summon 1 Warrior monster, using monsters you control as Material, including this card. You can only control 1 "Karbonala Knight".

Create a new Rokket that actually helps them combo off.

[Flash Flyer - Sakura]

Since Rokkets still need to be targeted by Links to do shit...

Cannonrokket Dragon
Level 6 | DARK | Dragon | Effect
2500/1500
"Rokket" monsters you control that are targeted by card effects are treated as being targeted by a Link Monster. You can only use the following effects of "Cannonrokket Dragon" once per turn.
● If you control no monsters or all monsters you control are DARK Dragon monsters (min. 1), you can Special Summon this card from your hand or GY.
● You can target 1 monster you control; destroy all monsters your opponent controls with equal or less ATK than that monster, then your opponent takes 600 damage for each.

Idea here is it makes everything a Link Monster in terms of targeting so the rest of the Deck can trigger what they're supposed to be doing. And yes, blow up everything for (moderate/large) damage.

---

Let's make a new Earthbound Immortal.

[Draconus297]

Earthbound Immortal Machaqway
DARK - Level 10 - Reptile/Effect - 2900/0
You can only control 1 face-up "Earthbound Immortal" monster. If you do not control a face-up Field Spell, destroy this card. Cannot be targeted for attacks. This card can attack your opponent directly. Once per turn, during your turn, you can reduce this card's ATK in multiples of 100 (Quick Effect): Reduce the ATK of all monsters your opponent controls by the same amount of ATK this card lost, then destroy all monsters your opponent controls with 0 ATK. During the End Phase, if this card activated this effect this turn: This card's ATK becomes 2900, also both players draw 1 card for each card destroyed by this card's effect.

Machaqway is Quechua (everything that remains of the original Inca language) for "legless reptile", based on the Snake Nazca glyph.
Fun fact: All EBI are named in Quechua, but some of them are translated stupidly- Chacu Challua is "anger dolphin", not whale (that's chasqua), Ccpac Apu is "Tall Man", not "giant", and Ccarayhua is technically "tongue lizard", because nobody knows the original word for chameleon.

Make a DARK Machine Dupe target with an effect that activates on-Summon.

[Flash Flyer - Sakura]

(Probably writers didn't find any reliable sources for Quechua or could contact anyone who still spoke it enough. Same could be said for any lesser known languages, had Konami/anime went for those, but...that's another story.)

Nano Explosive
Level 1 | DARK | Machine | Effect
500/500
If this card is Summoned: Activate 1 of these effects.
● Inflict 500 damage to both players.
● Target 1 Spell/Trap on the field; destroy it.

(it's also a 141 target, so make of that as you will.)

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OK then, let's make a new Elementsaber card.

(Because the Main Deck is derived from Hawaiian, you may want to use this site for words: http://wehewehe.org/. Do NOT use Google Translate; it is literally inaccurate.)

[Draconus297]

Elementsaber Wai Kula
EARTH - Level 6 - Warrior/Effect - 2000/2500
If your opponent activates the effect of a monster of the same Attribute as a monster in your GY while this card is in your hand: You can send 2 other monsters from your hand to the GY; negate that effect, then Special Summon this card from your hand. If this card on the field was Summoned this way, "Elementsaber" and "Elemental Lord" monsters you control gain the following effect(s) depending on the original Attribute(s) of the monsters sent to the GY for this card's Summon:
●EARTH or WIND: Once per turn, you can shuffle 1 monster from your GY into your Deck with the same Attribute as this card: Destroy 1 monster your opponent controls.
●FIRE or WATER: You can shuffle 3 monsters from your GY into your Deck with the same Attribute as this card: Add 1 "Elementsaber" monster, or "Palace of the Elemental Lords", from your Deck or GY to your hand. This effect gained this way can only apply once per turn.
●LIGHT or DARK: This card gains 1 additional attack during each of your Battle Phases.
Once per turn, if this card is in your GY: You can declare 1 Attribute; this card in the GY becomes the declared Attribute until the end of the turn.

Now your game plan isn't hideously fragile!

Create a support card that either directly supports, or creates a small archetype around, one specific generic card, either IRL or AGM.

[The Nepfessor]

Big Slush Giant
★★★★★★
WATER
Sea Serpent/Effect
ATK 2100
DEF 1000
You can Special Summon this card (from your hand) by discarding 1 card. If this card is Normal or Special Summoned: You can send 1 "Slushy" from your Deck to the GY. If this card is Special Summoned from the GY: You can target 1 monster your opponent controls; destroy it. You can only use this effect of "Big Slush Giant" once per turn.

Supporting Slushy here.

N/C: (that's a simple one): A Rock Tuner.

[Draconus297]

Guardian Gargoyle
EARTH - Level 3 - Rock/Tuner/Effect - 800/2000
If you Normal or Special Summon a Rock monster: You can Special Summon this card from your Graveyard. If this card is sent to the Graveyard: You can Special Summon 1 Level 4 or lower Rock monster from your Graveyard. You can only activate each effect of "Guardian Gargoyle" once per turn.

A mostly-generic (doesn't need to be usable in every Deck, but doesn't require any specific archetype or Deck strategy to be used) monster with a draw effect.

[Flash Flyer - Sakura]

Autumn Wind & Fallen Shakyamuni (秋風らくばく, Shūfū Rakubaku)
Level 3 | WIND | Zombie | Tuner | Effect
0/1800
During either turn, except the End Phase (Quick Effect): You can discard this card; apply this effect this turn. You can only use this effect of "Autumn Wind & Falling Shakyamuni " once per turn.
● Each time a monster effect is activated, you draw 1 card, then if you have 5 or more cards in your hand after this effect resolves, gain 500 LP, also inflict 500 damage to your opponent. If you did not draw a card by this effect, shuffle all cards in your hand into the Deck, then you lose 3000 LP.

秋風落莫 / 首府落馬躯

Shūfū Rakubaku translates to "forlorn and helpless; lonely and desolate​" / "Buddha/Shakyamuni falling off a horse in the capital". Uh...this oneʻs JP name is more convoluted than the other 5 (but obviously having to dig through jisho.org to find stuff that works sucks when I donʻt know word puns in Japanese.)

But yeah, hereʻs a WIND hand trap that lets you draw stuff.

====
I will give 2 choices for next prompt.

1. Anti-Shaddoll card (or some monster that can screw them over)
2. New Aroma monster

[The Nepfessor]

Aromage Basil
★★★
WIND
Plant/Effect
ATK 1000
DEF 800
If your LP are higher than your opponent's: You can target 1 "Aromage" monster in your GY, except "Aromage Basil"; add it to your hand. If you gain LP: You can Special Summon this card from your hand. You can only use each effect of "Aromage Basil" once per turn.

N/C: A Cyberse-Type Monarch.

[Flash Flyer - Sakura]

Ignisterium the Cyberspace Monarch
Level 8 | EARTH | Cyberse | Effect
2800/1000
You can Tribute Summon this card by Tributing 1 Tribute Summoned monster. If this card is Tribute Summoned: You can send 2 "Monarch" Spell/Trap Cards with different names from your hand and/or Deck to the Graveyard, and if you do, send cards your opponent controls to the GY, up to the number of monsters you control with 2400 or more ATK and 1000 DEF with different names. Once per turn: You can target 5 "Monarch" Spells/Traps and/or monsters with 2400 or more ATK and 1000 DEF in your GY or that are currently banished; shuffle all 5 into the Deck, then draw 1 card.

(Something "do Monarchs really need a way to clean boards and recycle shit? after SR01"? Also "Ignisterium" is reference to the Ignis in VRAINS.)

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I guess make a Level 10 or higher monster

[Draconus297]

Master of the Crown
EARTH - Level 11 - Warrior/Effect - 1100/0
This card's effects are negated if it was not Normal Summoned. You can also Tribute Summon (but not Set) this monster by Tributing 3 monsters. If you do, this card is unaffected by card effects, except its own. This card gains ATK and DEF equal to the respective combined ATK and DEF of all monsters Tributed for its Tribute Summon. If this card destroys a monster by battle: You can banish that destroyed monster, face-down, and this card gains the banished monster's original effects. At the start of your opponent's Battle Phase (Quick Effect): You can Special Summon 1 monster from your Graveyard to your opponent's field with its effects negated, also all monsters your opponent controls must attack this card.

Meet a boss monster you might occasionally bump into on Percy.

Create a Reptile with an effect similar to Amazoness Baby Tiger's (revives itself entirely for free, and does not banish itself afterward, with only a condition and a HOPT clause).

[The Nepfessor]

Rattleviver
★★★
EARTH
Reptile/Tuner/Effect
ATK 1100
DEF 800
If a Reptile monster is Normal or Special Summoned to your field while this card is in your hand or GY: You can Special Summon this card. You can only use this effect of "Rattleviver" once per turn. If this card is used for the Synchro Summon of an EARTH or Reptile Synchro Monster: You can send the top 2 cards of your Deck to the GY.

Back at it again with the crappy puns.

N/C: A Superheavy Samurai Tuner Pendulum Monster (I want to see the reference in the name you chose)

[Flash Flyer - Sakura]

To be fair to everyone, the Japanese puns don't translate into English (or probably other languages) very well, if at all.

Superheavy Samurai Resonancer
Level 3 | EARTH | Machine | Pendulum | Tuner | Effect
1000/1300
Scale 1
PE: Once per turn: You can declare a Level from 1 to 8; all "Superheavy Samurai" monsters you control become that Level until the End Phase. If you have a Spell/Trap in your GY, this card's Pendulum Scale becomes 4.

ME: Once per turn: You can target 2 "Superheavy Samurai" monsters you control with a Level, then declare a Level from 1 to 8; the targeted monster's Level become the declared Level until the End Phase of this turn. You cannot Special Summon monsters the turn you activate this effect, except Machine monsters.

For flavor thing, Resonance = kyoumei, so Kyoume-E (キョウメ―Ｅ[イー]). Also named in a way so it doesn't get confused with the "Resonator" archetype if named as such.

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Make a Gemini or Spirit monster

[The Nepfessor]

Battle Lupin
★★★★
DARK
Psychic/Spirit/Effect
ATK 1900
DEF 800
Cannot be Special Summoned. If this card is returned from the field to the hand: You can discard this card; inflict 500 damage to your opponent, also you gain 500 LP. You can only use this effect of "Battle Lupin" once per turn. Once per turn, during the End Phase, if this card was Normal Summoned or flipped face-up this turn: Return this card to the hand.

Now, make a Prediction Princess Effect Monster.

[Flash Flyer - Sakura]

Prediction Princess Necrobanshee
Level 4 | DARK | Fairy | Flip | Effect
300/2200
FLIP: You can Special Summon up to 2 "Prediction Princess" monsters from your GY in face-down Defense Position, except "Prediction Princess Necrobanshee", then if you Special Summoned 2 monsters by this effect, destroy 1 monster your opponent controls. During the End Phase: Change all monsters Special Summoned by this effect to Attack Position (even if this card leaves the field).

Because of the naming thing, necromancy + banshee.

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Let's try a Spirit Link Monster

[Draconus297]

Amato-no-Uzume
LIGHT - Link-2 - Fairy/Link/Effect - 1000 - L/B
2 monsters, including at least 1 Spirit monster
If this card is Link Summoned: You can add 1 Level 5 or higher Spirit monster from your Deck to your hand. During the End Phase, if a Spirit monster(s) is returned to your hand: Place 1 Counter on this card for each. Once per turn, if a Counter is placed on this card by its own effect: You can add 1 Spirit monster from your Graveyard to your hand. While this card has a Counter on it that was placed by its own effect, this card cannot be targeted for attacks or effects, also it can attack your opponent directly. Once per turn, you can remove 2 Counters from this card (Quick Effect): Normal Summon/Set 1 Spirit monster (without Tributing, even if that monster is Level 5 or higher). If your opponent activates a card or effect in response to the Summon or effect of a Spirit monster: You can banish 1 card from their field or Graveyard.

Create an ideal target for "Service Soul" (Discard 1 monster that specifically names one other monster in its text, draw 2 cards. You can then banish "Service Soul" on your next turn to put whatever card you discarded for its effect back in your hand.)

[Flash Flyer - Sakura]

It's easier to make a monster that names an already existing one, so only 1 card needs designing, so...

Ruka the Spirit World Signer
Level 4 | LIGHT | Fairy | Effect
1400/2000
If this card is Summoned: You can add 1 "Kuribon" from your Deck or GY to your hand, or Special Summon it in Defense Position. If this card is added to your hand, except during the Draw Phase: You can Special Summon it. You can only use this effect of "Ruka the Spirit World Protector" once per turn. You take no battle or effect damage.

Competitively, this probably won't see play considering Kuribon's effect is bad in 2019, but...you do get protected from damage while she exists, so...

You can already figure out who this is named after. (Her brother is a Pendulum though, but I think I'm leaving that distinction off here for now)

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Make a monster based on a god/goddess.

(You can choose any religion you want, past or present.)