Mox Opal [Judge Gift Cards 2019]Set: Judge Gift Cards 2019 Type: Legendary Artifact Rarity: Mythic Cost: {0} Metalcraft {T}: Add one mana of any color. Activate only if you control three or more artifacts. The suns of Mirrodin have shone upon perfection only once.

where X is the mana value of the exiled creature

Set: Gym Challenge Unlimited Type: Fire Rarity: Uncommon Retreat cost: Colorless

cenn of Kinscaer

Set: Alpha Edition Type: Instant Rarity: Common Cost: {X}{U} Counter target spell unless its controller pays {X}

it means that the throne is destined to be yours

Bonds of Mortality

Battered and beaten by years of salt and claw

Add an amount of {B} equal to the sacrificed creature's mana value

Set: Magic Player Rewards 2006 Type: Creature — Specter Rarity: Rare Cost: {1}{B}{B} Flying

Set: Sun & Moon: Unified Minds Type: Psychic Rarity: Secret Rare Retreat cost: Colorless

{1}{G}: Regenerate target Beast

{T}: Create a 1/1 colorless Sliver creature token