Proposal for Aatrox's passive in the upcoming gameplay thing

I think it'd thematically make sense if his revive worked like Hecarim's W and he healed for a portion of any damage dealt around him (both by allies/enemies, heck, even minions/monsters) during the X seconds he's untargetable.

He's supposed to be a warrior that thrives in the middle of battle, so it'd make sense for him to get a larger heal the more, well, battle is going on around him.

Thoughts?