Mikaeus, the Unhallowed [Dark Ascension] 101 its controller adds an additional

its controller adds an additional one mana of that color

Set: EX: Team Rocket Returns Type: Fire Rarity: Secret Rare Retreat cost: Colorless

Set: Sword & Shield: Fusion Strike Type: Darkness Rarity: Ultra Rare Retreat cost: Colorless

Set: Diamond & Pearl: Great Encounters Type: Psychic Rarity: Holo Rare Retreat cost: Colorless

Mikaeus, the Unhallowed [Dark Ascension] 101 its controller adds an additionalSet: Dark Ascension Type: Legendary Creature Zombie Cleric Rarity: Mythic Cost: {3}{B}{B}{B} Intimidate (This creature can't be blocked except by artifact creatures and or creatures that share a color with it.) Whenever a Human deals damage to you, destroy it. Other non Human creatures you control get +1 +1 and have undying. (When a creature with undying dies, if it had no +1 +1 counters on it, return it to the battlefield under its owner's control