Twilight Lesser Fireball

You create a tiny ball of fire in your palm, and hurl it at a target you can see. Make a ranged spell attack against your target, dealing 6d6 Fire damage if you hit.
This spell automatically sets fire to flammable unattended objects. At the DM's discretion, if your target is a creature and is especially flammable in nature, or covered in a flammable substance, they can make the creature roll a Dexterity saving throw or be set ablaze, to take 1d6 fire damage per round. If set ablaze in this way, the target may take an action to put the fire out.

Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 1.