Old Man of the Sea [Arabian Nights] Urza's Mine Mines became common as cities

Mines became common as cities during the days of the artificers

Set: Core Set 2019 Prerelease Promos Type: Legendary Creature — Elder Dragon Rarity: Mythic Cost: {1}{U}{B}{R} Flying

Chief Commander can't attack unless defending player controls an Island

Set: Portal Three Kingdoms Type: Legendary Creature — Human Soldier Rarity: Rare Cost: {5}{U}{U} Zhou Yu

Set: Ice Age Type: Instant Rarity: Uncommon Cost: {B} Choose a card name

Old Man of the Sea [Arabian Nights] Urza's Mine Mines became common as citiesSet: Arabian Nights Type: Creature Djinn Rarity: Rare Cost: {1}{U}{U} You may choose not to untap Old Man of the Sea during your untap step. {T}: Gain control of target creature with power less than or equal to Old Man of the Sea's power for as long as Old Man of the Sea remains tapped and that creature's power remains less than or equal to Old Man of the Sea's power.