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'Choose one or both —
• Exile target artifact.
• Exile target enchantment.
'This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a...
'({U/P} can be paid with either {U} or 2 life.) Draw two cards, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind...
'Whenever you cast a multicolored spell, this enchantment deals 2 damage to any target.
'This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a...
'[+1]: Create a colorless artifact token named Etherium Cell with "{T}, Sacrifice this token: Add one mana of any color." [−2]: Target creature gets +X/-X until end of turn, where...
'This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a...
'This spell can't be countered. Flying Whenever you draw a card, Niv-Mizzet deals 1 damage to any target. Whenever a player casts an instant or sorcery spell, you draw a...
'Trample, lifelink, haste
At the beginning of the end step, sacrifice this creature.
'Flying
If an opponent would lose life during your turn, they lose twice that much life instead. (Damage causes loss of life.)
'This spell can't be countered.
Destroy target nonland permanent with mana value 3 or less.
'[+1]: Untap up to two target artifacts. [−X]: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle. [−5]: Artifacts...