You can only activate one "Magician Ritual - Arc Iris" per duel. You can declare "Violet Poison", "Black Fang", or "White Wing", or "Double Iris". If you do, activate one of the following effects:
● If you declred "Violet Poison", Fusion Summon one monster from your Extra Deck using monsters from your hand or field and this card as a subsititue for one of the Fusion Material Monster(s).
● If you declared "White Wing", this card is treated as a Level 3 Tuner monster, and immediately Synchro Summon a monster from your Extra Deck using this card and and a monster(s) on your field as Synchro Material Monster(s).
● If you declared "Black Fang", Special Summon one Rank 4 or lower Xyz Monster from your Extra Deck, using a monster(s) on your field and this card as Xyz Materials. (This Special Summon is treated as an Xyz Summon.)
● If you declared "Double Iris", Special Summon monsters from your hand and/or face-up in your Extra Deck with Levels between 1 and 8.