Earthbound Immortal Cusillu (ANPR-EN016) [Ancient Prophecy]

Only 1 Earthbound Immortal monster can be face-up on the field. When there is no Field Spell Card face-up on the field, this card is destroyed. Your opponent cannot select this card as an attack target. This card can attack your opponent directly. If this card would be destroyed by battle, you can Tribute 1 other monster instead, and if you do, halve your opponent's LP.