Powder Keg (Jakub Slemr) [World Championship Decks 1999] Magic 2010 Set: Limited Edition Alpha Type:

Set: Limited Edition Alpha Type: Creature — Merfolk Rarity: Common Cost: {U} Most human scholars believe that Merfolk are the survivors of sunken Atlantis

or abilities requiring an activation cost

Set: Unlimited Edition Type: Instant Rarity: Rare Cost: {2}{U} Tap all lands target player controls and that player loses all unspent mana

Set: Theros Type: Legendary Enchantment Creature — God Rarity: Mythic Cost: {3}{G} Indestructible

Whenever you cast a spell

Powder Keg (Jakub Slemr) [World Championship Decks 1999] Magic 2010 Set: Limited Edition Alpha Type:Set: World Championship Decks 1999 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 converted mana cost equal to the number of fuse counters on Powder Keg.