Infernity Doom Archfiend

1 Tuner + 1+ non-Tuner monsters Once per turn: You can target 1 face-up card on the field; negate its effects (until the end of this turn), then if you have no cards in your hand, you can destroy it. While you have no cards in your hand, if this card battles an opponent's monster, any battle damage this card inflicts to your opponent is doubled. A DARK Synchro Monster that was Summoned using this card as material can make up to 2 attacks on monsters during each Battle Phase.

Fiend DARK Synchro Monster 6 synchro