Sakuya Izayoi

If Sakuya Izayoi was casted using both
red and white mana, Sakuya gains "{t}{r}{w}:
Create X Knife tokens, where X is the amount
of mana used to cast Sakuya."
Whenever Sakuya Izayoi dies, create X 1/1
fairy maid creature tokens, where X is one
plus the number of Knife tokens you control.
Sacrifice a knife token: Return Sakuya to the
battlefield with -1/-1.