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.
Queen Creek Near Mint - $1.00
Queen Creek Lightly Played - $0.95
Queen Creek Moderately Played - $0.85
Queen Creek Heavily Played - $0.75
Queen Creek Damaged - $0.70
Tempe Near Mint - $1.00
Tempe Lightly Played - $0.95
Tempe Moderately Played - $0.85
Tempe Heavily Played - $0.75
Tempe Damaged - $0.70