From ErfWiki

[edit] Proposed Canon

Fate is one of the three axes of magic (along with Erf and Numbers) used to break a major class of magic into three different disciplines. ^Erf-b1-p038a

Class\Axis	Fate
Hocus Pocus	Predictamancy
Spookism	Dollamancy
Stuffamancy	Changemancy
Eyemancy	Thinkamancy
Hippiemancy	Signamancy
Naughtymancy	Croakamancy
Stagemancy	Carnymancy
Clevermancy	Healomancy

[edit] Miscellaneous

• Attunement to Arkentools is governed by Fate magic.^Erf-b1-p022

[edit] Speculation

The Axis of Fate seems to focus on an active target's status. For instance, Croakamancy can return a character from croaked to uncroaked. Dollamancy (and by proxy fabrication) specializes in the creation or re-configuration of a base material into non-living items like raiment, golems and small, non-magical items. Presumably, Healomancy restores hit points and removes other status effects. And Thinkamancy has been shown to alter loyalty scores. Predictamancy can determine a target's future state - alive, dead, carrying around an Arkentool.