When this creature attacks, give it one Spell Counter.

{t} You can remove 3 Spell Counters from permanents you control. The next Wizard or Warlock spell you cast this turn has Flash, and costs 1m less. If this creature would die, it is no longer an creature, and remains on the battlefield with the same number of Counters.

Each time an Instance or Sorcery is cast, place one Spell Counter on this card. You can remove 3 Spell Counters from Magister of Endymion, it becomes a creature, and target one creature you control. It gains a Spell Counter.