Aether Sink (Unlimited)
Aether Sink enters the arena with a steam counter on it.
Action - [1 Resource]: If there are no steam counters on Aether Sink, put a steam counter on it. Go again
Instant - Remove a steam counter from Aether Sink: Aether Sink gains Arcane Barrier 2 until end of turn. (If your hero would be dealt arcane damage, you may pay [2 Resource] instead. If you do, prevent 2 arcane damage that source would deal.)