Reactant

Reactant is an Eternal made drink that contains a high concentration of Core Energy. Because of this, the drink glows and can revitalize an Eternal core with energy.

Because core energy gradually disappears, the older the reactant is, the dimmer it gets, until it finally turns black. Reactant can NOT be re-energized.

Reactant can also be made out of Eternal blood, but other than that, eternals typically charge plain water with core energy.

The drink reportedly tastes like motor oil, very similarly to Eternal blood, no matter what the reactant was made from.

The drink also has a weird light bending steam coming off of it, making the drink appear to bend it’s surroundings. This is because of the nature of core energy