Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Budoka Pupil.
At the beginning of the end step, if there are two or more ki counters on Budoka Pupil, you may flip it.
Ichiga, Who Topples Oaks
Legendary Creature - Spirit
Remove a ki counter from Ichiga, Who Topples Oaks: Target creature gets +2/+2 until end of turn.