3 Level 4 monsters
You can only control 1 "Bujinki Amaterasu". Once per turn, during either player's turn: You can detach 1 Xyz Material from this card; apply this effect, depending on whose turn it is.
* Your turn: Target 1 of your banished Level 4 or lower monsters; Special Summon that target.
* Your opponent's turn: Target 1 of your banished Level 4 or lower monsters; add that target to your hand.