Choose a 3x3 arena: every piece inside except kings lurches one random square (blocked pieces stay put), and any two that crash into the same square are both wrecked.
You draft Demolition Derby in Buff mode. Activated: you choose when to use it, and using it is your move for that turn.
As a attack card, it removes or detonates a piece directly.
“Engines rev. Nobody signed a waiver.”