MRPG Magefire
Magefire, despite the deceptively-based name, is a special spell-tree accessible in two sides by classes with the light and dark magic proficiencies. The Endo-Mage already has access to both sides of the tree.
The technique is not, as the name implies, fire-based, but it works around dark and light magic. Thus, it deals positive or negative damage instead of fire damage.
Light Magefire
Light Magefire is focuses more heavily on AOE and crowd-control, though a focus for a specific, high-damage, single-target spell exists.
Dark Magefire
Dark Magefire deals more damage over time and specific, high-damage spells early-on. Dark magefire is also among the few techniques able to deal temporary and lasting stat-damage.
Combine
At the top of the magefire spell-chain is the Onia, where darkness and light become one. This spell is particularly powerful because it deals Supplemental(untyped) damage
