Treasure Chest

Metamorphosis

As an additional cost to cast this spell, sacrifice a creature.
Add X mana of any one color, where X is 1 plus the sacrificed creature's mana value. Spend this mana only to cast creature spells.

Rinascimento

Chronicles Foreign Black Border

Chronicles

Sacrifice a creature to add an amount of mana equal to its casting cost plus one to your mana pool. This mana may be of any one color. Use this mana only to cast summon spells.

Arabian Nights

Sacrifice a creature of yours in play for an amount of mana equal to its casting cost plus 1. This mana can be of any one color, and can only be used to summon creatures.