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Messenger of Peace
Monsters with 1500 or more ATK cannot declare an attack. Once per turn, during your Standby Phase, pay 100 LP or destroy this card.

Metal Armored Bug
A gigantic insect-like creature covered by thick armor. Everything in his path is destroyed.

Metal Detector
You can only activate this card when a Continuous Trap Card is activated. Negate all Continuous Trap Cards during the turn this card is activated.

Metal Dragon
"Steel Ogre Grotto #1" + "Lesser Dragon"

Metal Fish
A metal fish with a razor-sharp caudal fin.

Metallizing Parasite - Lunatite
Once per turn, during your Main Phase, if you control this monster on the field, you can equip it to a face-up monster on your side of the field as an Equip Spell Card, OR unequip the Union equipment and Special Summon this card in face-up Attack Position. While equipped to a monster by this card's effect, that monster will be unaffected by the effects of Spell Cards controlled by your opponent. (1 monster can only be equipped with 1 Union Monster at a time. If the monster that this card is equipped to is destroyed as a result of battle, destroy this card instead.)

Metalmorph
Target 1 face-up monster on the field; equip this card to that target. It gains 300 ATK/DEF. If it attacks, it gains ATK equal to half the ATK of the attack target, during damage calculation only.

Metalsilver Armor
As long as you control the monster equipped with this card, your opponent cannot use the effect of a Spell, Trap, or Effect Monster that targets 1 monster, except the equipped monster.

Metalzoa
Cannot be Normal Summoned/Set. Must first be Special Summoned (from your Deck) by Tributing "Zoa" equipped with "Metalmorph".

Metamorphosis
Tribute 1 monster. Special Summon 1 Fusion Monster from your Extra Deck with the same Level as the Tributed monster.