Continual Flame
A flame springs from an object that you touch. The effect casts Bright Light in a 20-foot radius and Dim Light for an additional 20 feet. It looks like a regular flame, but it creates no heat and consumes no fuel. The flame can be covered or hidden but not smothered or quenched.
Continual Flame 5e 2024 vs. 2014 edition differences
The 2024 version adds that the flame provides bright light in a 20-foot radius and dim light for an additional 20 feet, and specifies it consumes no fuel. The 2014 version states it creates no heat and doesn't use oxygen. The classes are expanded to include druids in 2024.