Avacyn, Maddened Archangel

Flying
When Avacyn, Maddened Archangel enters the battlefield and at the beginning of your upkeep,
for each player, Avacyn deals 3 damage to target creature that player controls chosen at random.
When Avacyn deals damage to itself, transform it.
Even Innistrad's greatest defender was not immune to
the madness infecting the plane.