Smokestack [Urza's Saga]Set: Urza's Saga Type: Artifact Rarity: Rare Cost: {4} At the beginning of your upkeep, you may put a soot counter on Smokestack. At the beginning of each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack.

Set: Duels of the Planeswalkers Promos 2012 Type: Creature — Vampire Rarity: Mythic Cost: {1}{B}{B}{B} Play with the top card of your library revealed

you may search your library for a basic Forest card

" —Ecclesiastes 3:19

or enchanted by anything white

Set: Kaladesh Inventions Type: Artifact Creature — Angel Rarity: Mythic Cost: {7} Flying

Set: Time Spiral Type: Instant Rarity: Rare Cost: {1}{R}{R} Buyback {3} (You may pay an additional {3} as you cast this spell

(It can block creatures with flying

Set: Limited Edition Alpha Type: Enchantment — Aura Rarity: Common Cost: {U} Enchant creature

reveal them

Set: Onslaught Type: Sorcery Rarity: Rare Cost: {3}{B}{B} Each player chooses a creature type

Set: Premium Deck Series: Graveborn Type: Enchantment — Aura Rarity: Uncommon Cost: {1}{B} Enchant creature card in a graveyard

When Knowledge Vault leaves the battlefield