The first time you crew it each time, you can draw two cards if it was double crewed and you smash face, I really like in in Zombie token decks since they have loads of spare 2/2 tokens running around to double crew it
Mutational Advantage, seeing its first printing in the original Fallout set, is worth about $4.50 thanks to being one of the best boardwipe protection spell for counters-based decks
He also has the ability to give creatures you control +X/+X until the end of the round whenever they attack, where X is their power
Instead they act like enchantments that you need to work to bring online, and after you flip them provide a major game effect
Gimli can also serve as a great form of removal once it gets big enough
The most expensive Kyurem cards feature some of the best artwork you'll find on any Pokemon card, and even this small space packs plenty of detail