Erratic Mutation⁣ - Time Spiral Remastered⁣ (Common)⁣ [67]

Erratic Mutation is a blue instant from Time Spiral Remastered that targets a creature and gives it a +X/-X until the end of turn, where X is determined by the mana value of a revealed nonland card from the top of your library. This card can serve as a surprise finisher or a defensive measure, allowing you to potentially weaken an opponent's creature while manipulating your library. It's especially useful in control or tempo decks that can take advantage of the flexibility it offers. Available from Vault of Cards, a UK-based Magic: The Gathering store with fast delivery.