Avrixa, Mistress of Forms

When Avrixa, Mistress of Forms enters
the battlefield, exile up to two target creatures you control. Avrixa, Mistress of Forms enters the battlefield as a copy of those creatures. (If multiple creatures are copied this way, then, this creature has all the abilities of each creature and has power equal to the sum of each of those creature's powers, the same is true for the toughness.)