Chronomaly Crystal Chrononaut

[ Psychic / Xyz / Effect ] 2 Level 3 monsters Once per turn, when this card is targeted for an attack: You can detach 1 Xyz Material from this card; this turn, this card cannot be destroyed by battle or by card effects, also your opponent takes any Battle Damage you would have taken from battles involving this card. ATK/ 2100 DEF/ 1000