Slithering Cryptid TMT/168

Set: Teenage Mutant Ninja Turtles
Collector Code: TMT/168
Name: Slithering Cryptid
Type: Creature — Fish Mutant
Oracle text: When this creature enters, 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.")
Rarity: Common