Aether Sink (Yellow)

This enters the arena with a steam counter.

Action -

: If there are no steam counters on this, put a steam counter on it. Go again

Instant - Remove a steam counter from this: This gets Arcane Barrier 2 until end of turn.

Rulings

From the Arcane Rising release notes

Aether Sink requires an action point to play as it is an action.
You can have multiple instances of arcane barrier.
You may not defend with Aether Sink (from hand) as it does not have a defense value.
You must pay to prevent arcane damage even if only one point of arcane damage would be prevented.
The prevention does not carry over even if you only prevent one arcane damage.
You may use the action even if it already has one or more steam counters on it, however it will not put a steam counter on it.
If you activate Aether Sink’s second ability multiple times in the same turn, it will gain multiple instances of arcane barrier 2.