Elemancy

Elemancy is one of two magic-casting systems in Final Fantasy XV, available to both Noctis and his entourage. Elemancy costs no MP to be used, instead requiring each spell be crafted from available ingredients collected from the world.

Procurement
Elemancy requires a few key ingredients in order to "craft" a spell: units of elemental energy. which can be drawn straight from elemental veins found throughout the world, or acquired from magitek enemies defeated with mechanical weapons like the Engine Blade or the Drain Lance; and a Magic Flask, a reusable container to put the crafted spell into. More flasks will be acquired as the game progresses.

After procuring the necessary ingredients, a wide variety of spells can be created by putting together Fire, Ice, and Lightning elements. Consumable items and spoils from monsters can also spice up a crafted spell, adding secondary effects like multi-casts from a single flask, healing the party while damaging enemies, and even lacing the spell with different status effects.

Any spell crafted will be instantly added to a list of all known recipes for easy access and repeat crafting.

Execution
After a magic flask is filled, it can be equipped to the bottom slot of Noctis' weapon list, and to the secondary weapon slots of Ignis, Gladiolus, and Prompto. As Noctis, when the magic flask is selected as the active weapon, holding the attack button will create an Area of Effect sphere that can be moved with the Left Stick. Releasing the attack button will throw the flask and release the crafted spell within the zone inside the sphere.

Additional Effects
While powerful and even helpful tool, elemancy does not discriminate between friend or foe. The element used may also be stronger in a particular area, like using fire elemancy in an arid climate. Elemancy can also have lasting effects on the area it is cast, where Fire will burn away grass, Thunder will electrify conductive metal surfaces, and Blizzard will cover friend and foe alike in ice, slowing their movements.