So is dunamancy a discipline of magic itself, or do all dunamancy spells fall under the other schools of magic? Like this one says 7-th level necromancy.
— Holly Tomcak (@HTomcak) March 16, 2020
It’s a “source” of magic, similar to arcane sources and divine sources (with overlap in each). Thus, the 8 schools of magic fall under the umbrella of “Dunamancy”.
— Matthew Mercer (@matthewmercer) March 16, 2020