And would a deck built post-FIRE design last longer
Just think of Grunn, the Lonely King attacking alone with Rafiq on the battlefield: Grunn doubles its power and toughness, gets any exalted triggers, and then gains double strike to smash in for over twenty points of damage
Look, Im the Jank Champ round these parts, but even I file this under bulk rares that make no gosh darn sense. #28
Its very powerful, its only two mana, and you should be running it in any deck that has Green and at least one more color in it
Unfortunately the ability can only be activated on your turn, but with the aggressive leanings of this commander I think you want to be going for the acorns anyway
In Limited, you've likely spent most of your resources in-hand just to get to a spot where you can cast the Horror as a 7/8 flash blocker, which means when you untap, you're unlikely to be able to go off with the Kraken