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 - $0.40
Near Mint Non-English - $0.40
Lightly Played - $0.30
Lightly Played Non-English - $0.30
Played - $0.30
Played Non-English - $0.30
Heavily Played - $0.20
Heavily Played Non-English - $0.20
Damaged - $0.20
Damaged Non-English - $0.20