Casey Malone, Lead Designer said:At the announced cost of 10 AP, it was too hard to get the bonus damage and AP from destroying Charged tiles, since the enemy had some extra time to match those Charged tiles away. To help get that Charged tile damage more often, the power's cost was reduced to 8, and it now creates 3 Charged tiles when fired, up from 2. As a nice bonus, I'm very happy with the poetry of a power specifically called Aces & Eights costing eight.