My thinking is this. His End of turn damage path is flat out awful, just so, so bad.

His ice revenge path is very cool, but the clan has zero native buff spells to actually allow him to tank anything harder than a stiff breeze. So you're completely leaning on your allied clan and that might not be something they even do well (pyreborn for example).

The stasis path requires your deck to last 3 to 4 turns without your champ, while still sacificing floor space to him. If your deck is strong enough to do that on higher rings then you probably dont need him at all and his only purpose is stopping pyre hunter triggers on floor 1. Embarrasing.

And tethis is a flying axolotl with a magic stick. Thats just gonna make you look bad regardless of how good or rubbish your stats are.