The Candlelight Enchantment is a spell that is used to make a candle always stay lit by reigniting the flame after it has been blown out.
In "Out of Scythe", Mel Vera cast this spell to prepare for battle against a Shadow Demon, who was on its way to steal the shard of the Scythe of Tartarus. The demon magically negated the light from the candles when he approached them, but they lit back up almost instantly.
Esto semper lux.
This spell translates to "Let there always be light".