Illusionary Mask (Retro) [30th Anniversary Edition] Colorless[-30] add an amount of {C}

add an amount of {C} equal to that spell's mana value

Throne of the Dead Three — Reveal the top ten cards of your library

John Carter of Mars and the Infinity RPG

These spirits of the air are winsome and wild

and you are needed more than ever

Illusionary Mask (Retro) [30th Anniversary Edition] Colorless[-30] add an amount of {C}Set: 30th Anniversary Edition Type: Artifact Rarity: Rare Cost: {2} {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2 2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead