Hand Of Aurelus won't trigger a zero cost Healing Hands from Smite if at negative mana

I just fixed this this morning. No ETA on release.

Unless you're using Desperate Measures node (top left) to keep casting smite while oom, then it won't trigger.

I think that would change the intent of the node too much. (assuming this is the node you're talking about)

When you directly use a melee attack and hit at least one enemy, you have a chance to cast Healing Hands around the target. This consumes mana based on Healing Hands's mana cost. Healing Hands restores less up front health when cast indirectly.