Old Man of the Sea [Arabian Nights] Aether Revolt Prerelease Promos Set: Onslaught Type: Enchantment Rare

Set: Onslaught Type: Enchantment Rare Cost: {1}{G} As Steely Resolve enters the battlefield

but its power was unmistakable

Set: Magic 2013 Type: Creature — Hydra Mythic Cost: {X}{G}{G} Primordial Hydra enters the battlefield with X +1/+1 counters on it

Set: Ixalan Promos Type: Creature — Merfolk Warrior Rare Cost: {3}{U} Creatures you control with +1/+1 counters on them can't be blocked

You may play it this turn

Old Man of the Sea [Arabian Nights] Aether Revolt Prerelease Promos Set: Onslaught Type: Enchantment RareSet: Arabian Nights Type: Creature Djinn 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.