This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 1 face-up Warrior of Zera on your side of the field while The Sanctuary in the Sky is on the field. If The Sanctuary in the Sky is on your side of the field, by discarding 1 LIGHT Monster Card from your hand to the Graveyard, destroy all monsters on your opponent s side of the field. If The Sanctuary in the Sky is not on your side of the field, this effect is not applied.