Mox Opal [Modern Masters 2015]Set: 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.

—Samite creed

Set: EX: Power Keepers Type: Fire Rarity: Common Retreat cost: Colorless

Set: Eldritch Moon Prerelease Promos Type: Legendary Creature — Angel Horror Rarity: Rare Cost: {5}{W}{W} When you cast this spell

Set: Countdown Calendar Promos Type: Psychic Rarity: Promo Retreat cost: Colorless

Set: Alpha Edition Type: Enchantment Rarity: Uncommon Cost: {2}{W}{W} At the beginning of your upkeep

Set: EX: Ruby & Sapphire Type: Water Rarity: Rare Retreat cost: Colorless

Set: EX: Dragon Type: Darkness Rarity: Holo Rare Retreat cost: Colorless

Set: Magic 2014 Type: Creature — Goblin Rarity: Rare Cost: {1}{R} {T}: Each creature attacks this turn if able

if you control three or more artifacts

(Whenever a Sliver deals combat damage to a player

Set: Lorwyn Type: Land Rarity: Rare As Ancient Amphitheater enters the battlefield

Set: Sword & Shield: Darkness Ablaze Type: Psychic Rarity: Rare Retreat cost: Colorless