[Soul Seal] (This card has "Banish one of this card's stock: Play this card's [Enter] Play this ability only during main timing.". If this card would leave the field for a non-field zone. Banish one of this card's stock instead.)

[Enter] ⇒ Put target servant in an allied graveyard into your hand. (When this card enters the field ⇒ Perform the effect.)