Mox Opal [Kaladesh Inventions] Elf Shaman Set: From the Vault: Relics

Set: From the Vault: Relics Type: Artifact Rarity: Mythic Cost: {0} Sacrifice a land: You gain 2 life

Set: Lorwyn Type: Tribal Enchantment — Merfolk Rarity: Uncommon Cost: {1}{U} At the beginning of your end step

Set: Prophecy Type: Creature — Avatar Rarity: Rare Cost: {6}{B}{B} If there are ten or more creature cards total in all graveyards

you may have its controller create a 1/1 white Warrior creature token that's tapped and attacking

untap Chandra

Mox Opal [Kaladesh Inventions] Elf Shaman Set: From the Vault: RelicsSet: Kaladesh Inventions Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts. On loan from a private collection, this unique mechanism extracts power from a carefully prepared gemstone.