When this creature leaves the battlefield, create a Mutagen token. (It's an artifact with "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
They imagine that out beyond the zoo, beyond the pen, there exists another world, and it encroaches with rapid certainty upon their own . . .
![Zoo Escapees [Teenage Mutant Ninja Turtles]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/files/4ef0445c-8263-528b-80a9-7cc580a5aedd.png?v=1771631160&width=1445)