Mox Opal [Modern Masters 2015] SM94 you can Special Summon 1

you can Special Summon 1 "Ancient Gear Golem" from your Graveyard

Fusion Material Monsters that are listed on a Fusion Monster Card

Set: Legends Type: Enchantment Rarity: Uncommon Cost: {1}{W} {1}{W}: The next time a black or red source of your choice would deal damage to you this turn

Set: Commander 2013 Type: Creature — Human Monk Rarity: Rare Cost: {1}{W} Whenever Serene Master blocks

Set: Tenth Edition Type: Creature — Bird Rarity: Rare Cost: {G} Flying

Mox Opal [Modern Masters 2015] SM94 you can Special Summon 1Set: Modern Masters 2015 Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts. The suns of Mirrodin have shone upon perfection only once.