As Boomstacker enters the battlefield and whenever it attacks, stack two dice on top of it. (All dice must be stacked vertically, one on top of another.) Boomstacker gets +1/+1 for each die in its stack. Boomstacker attacks each combat if able. When the stack falls, sacrifice Boomstacker.
Near Mint - $0.30
Lightly Played - $0.30
Moderately Played - $0.20
Heavily Played - $0.20
Damaged - $0.20
Near Mint Spanish - $0.30
Lightly Played Spanish - $0.30
Moderately Played Spanish - $0.20
Heavily Played Spanish - $0.20
Damaged Spanish - $0.20