Formation Union [DR1-EN104] Common Null If this card is discarded:

If this card is discarded: You can add 1 "Danger

Set: Gold Series: Haunted Mine Card type: Normal Monster Rarity: Ghost/Gold Rare Attack: 3000 Defense: 2500

you can Normal Summon it to have it become an Effect Monster with these effects

Set: Legendary Collection 2 Card type: Fusion/Effect Monster Rarity: Common Attack: 2400 Defense: 1500 "Elemental HERO Sparkman" + "Elemental HERO Clayman" Must be Fusion Summoned and cannot be Special Summoned by other ways

You can only use this effect of "Martial Metal Marcher" once per turn

Formation Union [DR1-EN104] Common Null If this card is discarded:Set: Dark Revelation Volume 1 Card type: Normal Trap Rarity: Common Select and activate 1 of the following effects: Equip 1 Union Monster on your side of the field to an appropriate monster on your side of the field as an Equip Spell Card. Unequip 1 of your equipped Union Monsters and Special Summon it to your side of the field in face up Attack Position.