The only low-health hero I see the heroic being a real issue would be Abathur, so Descent into Madness is ideally a set amount of damage, equal to around 80% of Abathur's base health, so maybe like 550ish base damage. Not exactly the required amount to kill him, but possible with something like a Tyrande Sentinel or a sneaky Genji to follow up. The idea of Descent into Madness is not to oneshot half the cast, but instead to either pick off weakened enemies after a teamfight, or get the upper...