While I like this, I think this ability is blue. I still want it to make tokens, but I want something a little more unique than a rhino or other creature. Hmm. Would beasts with a p/t equal to creature with the highest p/t be okay?

As written this is blue, but perhaps you could transform it into something like Miming Slime. Of course, Spitting Image says that this could possibly be stretched into green.

Two copies of what Miming Slime does for looks good to me.

Thanks Alex! I went with the Miming Slime plan.