Charmers of the Grand Circle

2+ "Charmer" or "Familiar-Possessed" monsters
If this card is Fusion Summoned: You can activate this effect; for each different original Attribute used for its Fusion Summon (max. 4), you can apply 1 effect from this list. You can choose the same effect more than once. Resolve each effect before choosing again.
• This card gains 800 ATK. • Add 1 "Possessed" Spell/Trap from your Deck to your hand.
• Return 1 card on the field to the hand. • Special Summon 1 Spellcaster monster from your GY.
You can only use this effect of "Charmers of the Grand Circle" once per turn.