I always forget the hand condition since cataclysm is the only real mechathun combo and it looks like mechathun dies before the hand is discarded even though that's not how the actual mechanics work

Nature studies discounting naturalize might make Thaurissan worth cutting, especially with fungal fortunes. using branching paths instead could be good, having the modality of a savage roar or card draw for the mechathun wincon seems very powerful.

I think a big question on the cards power is how they attack, if its left to right (or vice versa) that's great since knowing what you're attack will do is great and can predictably give things rush by playing them on the left side. however if its random order is may just be too awkward to use where you end up losing 1/2 small minions for no reason, or your kreen trades first and you're sad.

Maybe you run murloc paladin with tip the scales using wandmaker and vulpera scoundrel as your only spells. You would need to cut hand of adal though.