Evil HERO Neos Lord

"Elemental HERO Neos" (or 1 Fusion Monster that mentions it) + 1 Effect Monster on the fieldMust be Special Summoned with "Dark Fusion". Cannot be destroyed by battle or card effects. If this card is Special Summoned, or a monster(s) is sent to your opponent's GY while this card is on the field: You can target 1 face-up monster your opponent controls; take control of it. You can only use this effect of "Evil HERO Neos Lord" once per turn.