Pyromancy More Powerful

Dangerous as they are, their most destructive power is the annihilating fire they can vomit at will—and to assault Baltrice with flame was worse than useless. The more flame they poured onto her, the stronger she got, and when a couple of them stooped like falcons to try their luck with fang and talon, she just opened her arms and invited them in with a truly happy grin.

Test of Metal: A Planeswalker Novel (Magic The Gathering: Planeswalker Book 3), Chapter 17