Hahahaha, this bug is awesome! I've turned myself into Daarmak and Mind Games so far. You get all the abilities of the card as a passive. If you turn into a troop, you heal up at the end of turn - if you turn into a non troop, the opponent can't deal damage to you! There are some downsides; it seems you can't gain thresholds from shards after transforming, though you still get the resource.
Obviously this card needs quickly banning in immortal until they can fix it. Turning yourself into a constant and becoming immune to dying is a little unfair.