Powder Keg [Magic Player Rewards 2004] Legendary Sacrifice Engineered Explosives: Destroy each

Sacrifice Engineered Explosives: Destroy each nonland permanent with converted mana cost equal to the number of charge counters on Engineered Explosives

They can't be regenerated

"There is no calamity greater than lavish desires

the Firemind deals 1 damage to any target

For the chronatog

Powder Keg [Magic Player Rewards 2004] Legendary Sacrifice Engineered Explosives: Destroy eachSet: Magic Player Rewards 2004 Type: Artifact 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.