Arixa, Mother of Devastation

When Arixa, Mother of Devastation enters the battlefield, choose Aberration or Mutation.
• Aberration — Creatures you control with
+1/+1 counters on them have infect and trample.
• Mutation — Whenever a creature you control
is dealt damage, you may put that many +1/+1
counters on it.
{4}{u}, {t}: Exile Arixa, Mother of Devastation,
return them to the battlefield tapped at the
beginning of the next endstep.