Blood on the Snow

Neve Insanguinata (Blood on the Snow) (it)

Snow Sorcery (CMC 6)
Choose one --
• Destroy all creatures.
• Destroy all planeswalkers.
Then return a creature or planeswalker card with mana value X or less from your graveyard to the battlefield, where X is the amount of spent to cast this spell. ( is mana from a snow source.)