Ermein, Traveler of Mutation

Whenever Ermein, Traveler of Mutation enters
the battlefield, it becomes a copy of any creature
you control, except its name is Ermein, Traveler
of Mutation, it's legendary in addition to its
other types and has all abilities of Ermein,
Traveler of Mutation.
{1}{u}{b}: Return Ermein, Traveler of Mutation
to your hand, and put a +1/+1 counter on target creature.