Illusionary Mask (Retro) [30th Anniversary Edition] Number_XY35 either Special Summon 1 Fiend

either Special Summon 1 Fiend monster

but as a key to the past

3 reference cards

Set: The Lost Art Promotion Card type: Normal Monster Rarity: Ultra Rare Attack: 1200 Defense: 800 A flame manipulator who is the only woman among the Elemental Heroes

It also gains the following ability until end of turn

Illusionary Mask (Retro) [30th Anniversary Edition] Number_XY35 either Special Summon 1 FiendSet: 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