Urza's Ruinous Blast [Dominaria Prerelease Promos]

Urza's Ruinous Blast [Dominaria Prerelease Promos]Set: 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.

The sea gives

if a planeswalker entered the battlefield under your control this turn

counter target spell with mana value X or less

Set: Dominaria Type: Enchantment — Saga Rarity: Rare Cost: {2}{B}{B} (As this Saga enters and after your draw step

Set: Modern Masters 2015 Type: Creature — Goblin Soldier Rarity: Uncommon Cost: {R/W}{R/W}{R/W} Double strike

You lie down with rats

eat three twigs of marshroot to ward off kelpies

Abzan sentries unfailingly guard the stronghold gates

When Treachery enters the battlefield

When Zacama

Set: Odyssey Type: Enchantment Rarity: Uncommon Cost: {3}{B}{B} {1}{B}

you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less