Boom Grenade (Yellow) [EVO085] [Bright Lights] Rainbow Foil

Rarity: Common

Card Number: EVO085

Type: Action

Class: Mechanologist

Pitch Value: 2

Cost: 0

Crank (As this enters the arena, you may remove a steam counter from it. If you do, gain an action point.)
This enters the arena with a steam counter. At the start of your turn, destroy this unless you remove a steam counter from it.
When a Mechanologist attack action card you control hits a hero, destroy this and deal 3 damage to them.