Kellan's Lightblades

Instant

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) Kellan's Lightblades deals 3 damage to target attacking or blocking creature. If this spell was bargained, destroy that creature instead.

Kellan struck out on pure instinct, and his conjured blades cleaved through the icy guardians as though they were nothing but air.