Mox Diamond [Stronghold] Urza's Power-Plant it deals 3 damage to

it deals 3 damage to each other creature and each opponent

where X is that creature's mana value

Whenever a land is tapped for mana

Set: Portal Three Kingdoms Type: Creature — Human Barbarian Soldier Rarity: Uncommon Cost: {4}{R} Horsemanship (This creature can't be blocked except by creatures with horsemanship

Mox Diamond [Stronghold] Urza's Power-Plant it deals 3 damage toSet: Stronghold Type: Artifact Rarity: Rare Cost: {0} If Mox Diamond would enter the battlefield, you may discard a land card instead. If you do, put Mox Diamond onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.