Servant of Endymion

If this card has a SC when it attacks it can't be blocked.
{t} You discard 1 card; place 1 Spell Counter on each nonland permanent you control.
If this creature would die, it is no longer an Creature,
and remains on the battlefield with the same number
of Counters on it that it had as a creature.
Each time an Instance or Sorcery is cast, place 1 Spell Counter on this card. You can remove 3 Spell Counters from this card; transform this card into a creature, and target 1 creature you control. You ma