Mew

Flying & Evolve (Whenever a creature enters the battlefield under your control, if that creature
has greater power or toughness than this one,
you may put a +1/+1 counter onto this creature)
When this creature enters the battlefield it may
use any other Pokemon's Monstrosity ability by
paying X, which is equal to said Monstrositys
mana cost(s). These abilitys may be from outside
the game & can be used on multiple Monstrosity abilitys, but never the same one twice.