Mox Opal [Kaladesh Inventions] Dragons of Tarkir Prerelease Promos Counter target spell if its

Counter target spell if its mana value is X

Set: Alpha Edition Type: Enchantment Rarity: Common Cost: {1}{W} {1}: The next time a green source of your choice would deal damage to you this turn

Set: Portal Three Kingdoms Type: Creature — Ox Rarity: Uncommon Cost: {3}{G} Swampwalk (This creature can't be blocked as long as defending player controls a Swamp

Zhao Zilong was a brave and noble warrior

Mox Opal [Kaladesh Inventions] Dragons of Tarkir Prerelease Promos Counter target spell if itsSet: 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.