If an Xyz Monster(s) is on the field: You can Special Summon this card from your hand. You can send 1 other card from your hand or field to the GY; add 1 "Xyz", "Onomat", "Zexal", or "Number" Spell/Trap, from your Deck to your hand. You can only use each effect of "Astraltopia" once per turn.
