You can only use the 1st and 2nd effect of this card’s name each once per turn.
(1) If a face-up Beast monster(s) you control other than “Melffy Seal” was returned to the hand this turn (Quick Effect): You can Special Summon this card from your hand, then, immediately after this effect resolves, you can Synchro Summon using only “Melffy” monsters in your hand and this card as material.
(2) During your End Phase, if this card is in your GY: You can target 1 Beast Xyz Monster you control; attach this card to it as material.