ToME: the Tales of Maj'Eyal

Whenever a Doomed character levels up, their shadows disappear the next turn, irrespective of whether any Shadows talents or relevant stats were changed.

Pretty sure this doesn't happen with other classes' pets, and it can be deadly if you level up in a big fight where you're relying on shadows to divert attention away from you.

Meh, I'm more annoyed by the sudden hate drain than anything else from this.

If they refunded their relevant hate instead of level ups COSTING resources, it'd be a step in the right direction.