The game should not assume heroes all carry an unlimited invisible box of matches to light candles and lamps with. Doing that should require a fire source, whether that is Fire Brand, lava, a fire trap, the wand of fire, the fireball spell, or an already lit candle, lamp, or potion of oil. There could also be a new “lighter” tool which enables you to light things, but can get lost or run out of charges.

You can use a forge to combine elemental wands with weapons, destroying the wand and conferring an object property of cold, fire, or shock on the weapon.

Artifact wand of fire which casts fireballs instead of rays. (Where a normal wand would zap a ray, this instead casts the Basic form of the fireball spell without needing Pw or knowledge of the spell.)