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.
Near Mint - $3.60
Lightly Played - $2.90
Moderately Played - $2.50
Heavily Played - $2.20
Damaged - $1.80
Near Mint Spanish - $3.60
Lightly Played Spanish - $2.90
Moderately Played Spanish - $2.50
Heavily Played Spanish - $2.20
Damaged Spanish - $1.80