I have been toying with the idea of using Devastators more often. However, I want to make sure I am using it correctly. The card says once per round. Now my understanding of "round" is equivalent to "game". Is the ability usable one time during the entire game or am I misinterpreting it, and it is actually used once per activation. Thanks for the clarification.

Each turn.

That's what I was hoping. I may just be getting hung up on round because of tournament "rounds"

Once each turn. On any one attack made from your front arc.

Hummmm? I like his once per game idea.

Abilities and effects are always created with the game in mind not a tournament round.