Mox Opal [Modern Masters 2015] Dominaria Prerelease Promos Its effects are not activate

Its effects are not activate at this time

{T}: Add {G}{G}

Set: Duel Terminal 1 Card type: Synchro/Effect Monster Rarity: Rare Attack: 2100 Defense: 400 1 Tuner + 1 or more non-Tuner monsters During battle between this card and a Defense Position monster whose DEF is lower than the ATK of this card

Set: The Lost Art Promotion Card type: Normal Monster Rarity: Ultra Rare Attack: 200 Defense: 300 A forbidden right arm sealed by magic

Mox Opal [Modern Masters 2015] Dominaria Prerelease Promos Its effects are not activateSet: Modern Masters 2015 Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate this ability only if you control three or more artifacts. The suns of Mirrodin have shone upon perfection only once.