Cromat [Apocalypse] Illusion Whenever a spell or ability

Whenever a spell or ability you control counters a spell

Set: Tempest Type: Creature — Elemental Rarity: Rare Cost: {5}{G}{G}{G} At the beginning of each upkeep

but not for a way to control it

Set: Amonkhet Invocations Type: Creature — Avatar Rarity: Mythic Cost: {6}{B}{B} If there are ten or more creature cards total in all graveyards

Cromat [Apocalypse] Illusion Whenever a spell or abilitySet: Apocalypse Type: Legendary Creature Illusion Rarity: Rare Cost: {W}{U}{B}{R}{G} {W}{B}: Destroy target creature blocking or blocked by Cromat. {U}{R}: Cromat gains flying until end of turn. {B}{G}: Regenerate Cromat. {R}{W}: Cromat gets +1 +1 until end of turn. {G}{U}: Put Cromat on top of its owner's library.