Target up to 3 "Ars Magna" monsters in your field or GY; banish them, then until the end of this turn, you can negate the effects of up to that many other face-up cards on the field. You can banish this card from your GY; return 1 "Power Patron" Link Monster from your GY to the Extra Deck, then you can Special Summon it. You can only use 1 "Ars Magna "Philosophorum"" effect per turn, and only once that turn.