Chainer, Dementia Master (Borderless Alternate Art) [Dominaria Remastered] Drake whenever either of those creatures

whenever either of those creatures deals combat damage

except it’s an Illusion in addition to its other types and it has “When this creature becomes the target of a spell or ability

Set: The Dark Type: Creature — Shark Rarity: Common Cost: {5}{U} Giant Shark can't attack unless defending player controls an Island

Set: Planechase Planes Type: Plane — Dominaria Rarity: Common At the beginning of your end step

Chainer, Dementia Master (Borderless Alternate Art) [Dominaria Remastered] Drake whenever either of those creaturesSet: Dominaria Remastered Type: Legendary Creature Human Minion Rarity: Rare Cost: {3}{B}{B} Nightmare creatures get +1 +1. {B}{B}{B}, Pay 3 life: Put target creature card from a graveyard onto the battlefield under your control. That creature is black and is a Nightmare in addition to its other creature types. When Chainer, Dementia Master leaves the battlefield, exile all Nightmares.