pokemon cards shining charizard Shiny V Gold Metal Card end display Charizard ex Shiny Super Rare

And it also ranks very high among the funniest proxies

Honorable Mention) Changeling Outcast Changeling Outcast is technically a Ninja, a Mutant, and a Turtle, for that matter

6 Graf Rats + Midnight Scavengers = Chittering Host By combining Graf Rats and Midnight Scavengers you get the fearsome Chittering Host

You'll eventually get some random spells for free, but note that casting one of the imprinted spells removes it from exile and returns it to its owner's graveyard when it resolves, so you'll need to tuck away another spell before the Diary triggers again

The cards Ragavan finds will typically be harder to cast in early turns, making the card advantage version of Ragavan iffy