Grommash first got targeted by Ancient Corehound’s Cauterizing Maw in the Majordomo Executus bounty, and then my Gul’dan’s Siphon Life failed to heal him in the same turn, despite Cauterizing Maw’s text stating that the affected character cannot be healed next turn. My Thrall got healed, Gul’dan didn’t.
My Gul’dan not getting healing is correct, though, since he was targeted by Cauterizing Maw last turn.
I wanted to attach images but I can’t figure out how to? It won’t let me post links.