YuGiOh: The Seal of Orichalcos

Yu-Gi-Oh Card: The Seal of Orichalcos
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The Seal of Orichalcos
Type:Field Spell
Text: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 monster(s) with the lowest ATK for an attack. When this card is activated: Destroy all Special Summoned monsters you control. You cannot Special Summon monsters from your Extra Deck. You can only activate "The Seal of Orichalcos" once per Duel.
Printings: Dragons of Legend: The Complete Series (DLCS-EN137)
Dragons of Legend: Unleashed (DRL3-EN070)
Legendary Collection 3: Yugi's World (LC03-EN001)
Magnificent Mavens (MAMA-EN111)