1U
Creature - Merfolk Rogue (2/1)
Discard a card: put a 1/1 blue Merfolk creature token onto the battlefield
5UWUBRG: put a 2/1 blue Faerie creature token with flying onto the battlefield
Pay 4 life: put a 1/1 blue Wizard creature token onto the battlefield
Pay 4 life, sacrifice a Wizard: draw a card, then discard four cards
When ~this~ enters the battlefield, target opponent may Pay 4 life. If that player doesn't, destroy all creatures. They can't be regenerated.

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4RR
Instant
all creatures with power 3 or less can't block until end of turn and those creatures get +4/-4 (This effect doesn't end)

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BR
Tribal Sorcery - Samurai
~this~ deals 5 damage to target player

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AlexChurchill/MagicCardGenerator