An Offer You Can't Refuse (FDN)

Instant

Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Essential counterspell for blue decks across multiple formats. An Offer You Can't Refuse punches well above its one-mana cost by stopping noncreature spells while generating mana acceleration for your opponent—a tradeoff that's almost always favorable when you're ahead on tempo or protecting a critical turn. The Treasure tokens smooth mana for any color, making the downside minimal in most matchups, especially in Commander where the extra ramp rarely matters if you've already disrupted their plan. Sees consistent play in Legacy, Modern, and Pioneer control and tempo shells, and is a format staple in Commander for any blue strategy that values early interaction.

Foundations — Uncommon