Dissipation Shield (1HP217) - History Pack Vol.1

Dissipation Shield enters the arena with 4 steam counters on it.
At the beginning of your action phase, destroy Dissipation Shield unless you remove a steam counter from it.
Instant - Destroy Dissipation Shield: The next time your hero would be dealt damage this turn, prevent X damage, where X is the number of steam counters on Dissipation Shield.