oh wait, still not on available on Alpha... FeelsBadMan
It's okay, we got this:
Heroic Strike (New) Heroically increase the damage of your next Mortal Strike, causing it to deal [ 165% of AP ] additional damage. Stacks up to 3 times. This ability is not on the global cooldown. Arms Warrior - Level 90 Talent. 15 Rage. Melee range. Instant. 1.5 sec cooldown.
Just wanted to remind you that we already have a topic for the Arms Legion discussion, even tho it's fallen a few pages back due to no real information regarding the spec.
http://www.mmo-champion.com/threads/...ion-Discussion