Urza's Ruinous Blast [Dominaria Prerelease Promos] Merfolk Mutant it gains "Whenever a land

it gains "Whenever a land enters the battlefield under your control

Set: Zendikar Rising Type: Artifact — Equipment Rarity: Common Cost: {1} When Cliffhaven Kitesail enters the battlefield

no problem

and deception

Set: Modern Horizons 2 Prerelease Promos Type: Sorcery Rarity: Rare Suspend 2—{1}{W} (Rather than cast this card from your hand

Urza's Ruinous Blast [Dominaria Prerelease Promos] Merfolk Mutant it gains "Whenever a landSet: Dominaria Prerelease Promos Type: Legendary Sorcery Rarity: Rare Cost: {4}{W} (You may cast a legendary sorcery only if you control a legendary creature or planeswalker.) Exile all nonland permanents that aren't legendary. Centuries ago, one man's vengeance plunged the world into ice and darkness.