Proposed Canon
Healomancy is one of the three disciplines of the Magic class Clevermancy; it is aligned with the axis of Fate and is composed of none of the three elements of Life, Motion and Matter.Erf-b1-p038a
 Known Healomancers
 Natural Healomancy
The healing of a unit's wounds at the beginning of their turn likely represents some form of Natural Healomancy.
It seems that Lofty and Altruist Elves have some form of natural healing abilities.Erf-b1-p022-p1