Hardleg Joe's idea

Xyz Eliminator
Zombie/DARK/Rank 4/ATK 0/DEF 0 (Xyz)
2 Level 4 monsters
Unaffected by other cards' effects. Cannot be targeted for attacks, but does not prevent your opponent from attacking directly. Any card(s) that is sent to the GY or banished is attached to this card as a face-up material instead. If this card has 20 or more material attached to it, your opponent wins the game.