At the beginning of your upkeep, put a time counter on Time Bomb. {1}, {T}, Sacrifice Time Bomb: Time Bomb deals damage equal to the number of time counters on it to each creature and each player.
Near Mint - $1.00
Lightly Played - $0.90
Played - $0.70
Heavily Played - $0.60
Damaged - $0.50
Near Mint Non-English - $1.00
Lightly Played Non-English - $0.90
Played Non-English - $0.70
Heavily Played Non-English - $0.60
Damaged Non-English - $0.50