Astral Kuriboh [RA04-EN040] Super Rare

You can reveal 1 'Number' Xyz Monster in your Extra Deck; Special Summon this card from your hand. If you do, this card's Level becomes the revealed monster's Rank, also while it is face-up in the Monster Zone, you cannot Special Summon monsters from the Extra Deck, except 'Number' Xyz Monsters. You can only use this effect of 'Astral Kuriboh' once per turn. A 'Number' Xyz Monster that was Summoned using this card on the field as material gains this effect.• Cannot be destroyed by battle or your opponent's card effects.