Powder Keg [Urza's Destiny] Eldritch Moon Prerelease Promos "When once winter has ahold

"When once winter has ahold

Set: Beta Edition Type: Artifact Rarity: Uncommon Cost: {3} {2}

return it to the battlefield under your control at the beginning of the next end step

Set: From the Vault: Transform Type: Creature — Vampire Rarity: Mythic Cost: {2}{B}{B} Flying

Put the rest on the bottom of your library in any order

Powder Keg [Urza's Destiny] Eldritch Moon Prerelease Promos "When once winter has aholdSet: Urza's Destiny Type: Artifact Rarity: Rare Cost: {2} At the beginning of your upkeep, you may put a fuse counter on Powder Keg. {T}, Sacrifice Powder Keg: Destroy each artifact and creature with mana value equal to the number of fuse counters on Powder Keg.