Niv - Cleaves off Kefnet's arm

But just in time to catch that fist was the new and supposedly improved Firemind. Niv-Mizzet spread his wings and launched himself up toward the God-Eternal. His golden wings glowed with a golden light, and his upward arc sheared Kefnet's fist off at the wrist. It landed like a boulder ten feet behind Teyo, Rat and the others, shaking the ground but doing no further damage.

***

War of the Spark: Ravnica, Chapter 49