Lacruma (unit)

The Lacruma [lakruːma] (SI unit symbol: Lc), plural lacrumae [lakruːmæ], is the SI base unit of mana amount.

1Lc equals the amount of mana needed to initially cast Ardescat (the weakest western spell) at minimum power (40 joule).

Despite being a base unit, the Lacruma cannot be used in non-magic related calculation, as its base (Ardescat) is extremely dependant on the individual power of the caster in actual power, and the end result of several High Ancient spells exceeds the amount of mana used to induce these (most extreme example, 1000 Thunderbolts requires 30kLc to activate, but its end yield is 46 Terajoule).

The word Lacruma means “droplet” in Latin.