Light and Darkness Dragon

This card cannot be Special Summoned. This card's attribute is also treated as "Dark". When this card is face-up on the field, negate all activation of effect Monsters, Spell, and Trap cards. Each time this effect negates an activation, decrease this card's attack and defense strength by 500. Select 1 Monster in your Graveyard, then Destroy all cards on your side of the field and Special Summon the chosen monster from the Graveyard to your side of the field.