Reproduction steps: 1. Deploy as many Demon Elves as you can. 2. Have your enemy deploy some Elves and non-Elves. 3. Cast Grimlic's Treachery. 4. All your Demon Elves will take damage as if they weren't demons AND take extra 4 damage for being Elves. I believe this bug is a result of removing Deep Elf as a race. @Sokolov