name: Spontaneous Mutation
originalText: Flash (You may cast this spell any time you could cast an instant.)\nEnchant creature\nEnchanted creature gets -X/-0, where X is the number of cards in your graveyard.
printings: CMR, EMN, INR, SIR
text: Flash\nEnchant creature\nEnchanted creature gets -X/-0, where X is the number of cards in your graveyard.
type: Enchantment — Aura