Your search for "Unmask 15" revealed the following:
Unmask (Foil) (V16) from From the Vault: Lore, available at 401 Games Canada. Rarity: Mythic Rare Finish: Foil Artist: rk post Card Text:You may exile a black card from your hand rather than pay Unmask's mana cost.Target player reveals his...
Unmask - MMQ Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: rk post Card Text:You may remove a black card in your hand from the game instead of paying Unmask's mana cost.Look at...
Unmask - Introducing: Kaito Shizuki (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Rorubei Card Text: Introducing: Kaito ShizukiYou may exile a black card from your hand rather than pay this spell’s...