Oubliette (Light Mana Cost) [Arabian Nights] DCI Legend Membership if it isn't a mana

if it isn't a mana ability

Set: Ninth Edition Type: Enchantment Rarity: Rare Cost: {2}{R} Nonbasic lands are Mountains

you may tap or untap target permanent

Set: Beta Edition Type: Enchantment — Aura Rarity: Uncommon Cost: {G} Enchant creature

Even as humans regained the upper hand

Oubliette (Light Mana Cost) [Arabian Nights] DCI Legend Membership if it isn't a manaSet: Arabian Nights Type: Enchantment Rarity: Common Cost: {1}{B}{B} When Oubliette enters the battlefield, target creature phases out until Oubliette leaves the battlefield. Tap that creature as it phases in this way. (Auras and Equipment phase out with it. While permanents are phased out, they're treated as though they don't exist.)