Niv - Piercing and piercing resistance

          Before Bolas could recover, Niv-Mizzet was on him again, claws reaching for the damaged scales on Bolas's chest. Bolas sidestepped, raking Niv's flank with one claw, then staggered as Niv's head snapped out and buried sword-sized teeth in his wrist.

***

The Gathering Storm, Chapter 18