The Seal of Orichalcos [DLCS-EN137] Ultra Rare Psychic [x2] You can only use each

You can only use each effect of "World Legacy - "World Armor"" once per turn

If you Special Summon a monster(s) while you control this card: All monsters your opponent currently controls lose 600 ATK and DEF

Set: Sun & Moon: Forbidden Light Type: Darkness Rarity: Secret Rare Retreat cost: Colorless

There can only be 1 face-up "King of the Beasts" on the field

The Seal of Orichalcos [DLCS-EN137] Ultra Rare Psychic [x2] You can only use eachSet: Dragons of Legend: The Complete Series Card type: Field Spell Rarity: Ultra Rare All monsters you control gain 500 ATK. Once per turn, this card cannot be destroyed by card effects. While you control 2 or more face up Attack Position monsters, your opponent cannot target your monster(s) with the lowest ATK for an attack. If this card is activated: Destroy all Special Summoned monsters you control. You cannot Special Summon monsters from the Extra