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You may pay 6 life and sacrifice three black creatures rather than pay this spell's mana cost.
Flying, trample
Casting Demon of Death’s Gate by paying its alternative cost doesn’t change its mana cost or converted mana cost.
Casting Demon of Death’s Gate by paying its alternative cost doesn’t change when you can cast it. You can cast it only at the normal time you could cast a creature spell.
Effects that increase or reduce the cost to cast Demon of Death’s Gate will apply to it even if you choose to pay its alternative cost.
