Death Burst. The magmin explodes when it dies. Dexterity Saving Throw: DC 11, each creature in a 10-foot
Emanation originating from the magmin. Failure: 7 (2d6)
Fire damage. Success: Half damage.
Actions
Touch. Melee Attack Roll: +4, reach 5 ft. Hit: 7 (2d4 + 2) Fire damage. If the target is a creature or a flammable object that isn't being worn or carried, it starts burning.
Bonus Actions
Ignited Illumination. The magmin sets itself ablaze or extinguishes its flames. While ablaze, the magmin sheds Bright Light in a 10-foot radius and Dim Light for an additional 10 feet.
RollQuest ships the D&D 2024 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.