Both Jodah, the Unifier's triggered ability and the spell cast with that ability resolve before the spell that caused the ability to trigger, even if the original spell was countered in response
Against a commander, Transmogrify just ramps them a creature in a way, because they can cast the commander again
Even creatures and non-creatures of mythic rarity can make a big impact in a game
The forest has become unnaturally overgrown and strange creatures are emerging (hello, Heroes of the Feywild), or a blight has swept across the land killing crops and animals alike, what sort of foulness is causing it
The fact that it costs 3 mana up front, is easy to deal with, can't attack well, and is an expensive activation without the triple draw makes it seem a little dicey
Enchantment +1 +1 Buffs (CTRL to add secondary) Good Humans Combat Celebrant If this creature hasn't been exerted this turn, you may exert it as it attacks