Target 1 face-up Xyz Monster you control; Special Summon 3 Umbral Horror Mirage Tokens (Fiend-Type DARK Level 1 ATK ? DEF 0). (When Summoned, each Token s ATK becomes equal to the that Xyz Monster s current ATK. They cannot attack your opponent directly or be Tributed, except for a Tribute Summon.) When that face-up Xyz Monster leaves the field, destroy these Tokens.