Oubliette (Light Mana Cost) [Arabian Nights] World Magic Cup Qualifiers during your opponent's Standby Phase:

during your opponent's Standby Phase: You can inflict 300 damage to your opponent for each card your opponent controls

Your opponent cannot target this card for attacks or by card effects

Set: EX: Delta Species Type: Water Rarity: Ultra Rare Retreat cost: Colorless

Set: Champions of Kamigawa Type: Sorcery Rarity: Rare Cost: {G} Whenever you cast a creature spell this turn

Randomly select and discard 1 card from your opponent''s hand

Oubliette (Light Mana Cost) [Arabian Nights] World Magic Cup Qualifiers during your opponent's Standby Phase:Set: 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.)