Earthbound Immortal Chacu Challhua (얼티메이트 레어)

There can only be 1 "Earthbound Immortal" monster on the field. If there is no face-up Field Spell Card on the field, destroy this card. Your opponent cannot target this card for attacks. This card can attack your opponent directly. Once per turn: You can inflict damage to your opponent equal to half this card's DEF. This card cannot attack during the turn you activate this effect. While this card is in Defense Position, your opponent cannot conduct their Battle Phase.