Oneiros, the Dream Mirror Tormentor (Super Rare)

2 Dream Mirror monsters with different Attributes
While face-up on the field, this card is also LIGHT-Attribute. You can only use each of the following effects of Oneiros, the Dream Mirror Tormentor once per turn.
? When a monster effect is activated while Dream Mirror of Terror is in a Field Zone (Quick Effect): You can negate that effect.
? If Dream Mirror of Joy is in a Field Zone (Quick Effect): You can Tribute this card; Special Summon 1 Oneiros, the Dream Mirror Erlking from your Extra Deck in Defense Position.