Smeargle
Once it becomes an adult, it has a tendency to let its comrades plant footprints on its back.
Flip a coin. If heads, choose a type (other than Colorless) and put a Coloring counter on the Defending Pokémon. That Pokémon is now the type you chose. If it already had a Coloring counter, remove the old one. If tails, this attack does nothing.
