Kerblam! Warehouse
From Doctor Who set
Kerblam! Warehouse
Plane — Kandoka
Whenever one or more creatures you control deal combat damage to a player, create a Treasure token.
Whenever chaos ensues, until your next turn, noncreature artifacts you control gain "
, Sacrifice this artifact: Flip a coin. If you win the flip, this artifact deals 3 damage to any target."