Casimir's Ember

With a snap of your fingers, you conjure an ember next to a creature within range. The creature must succeed on a Dexterity saving throw or begin burning. The burning creature takes 1d4 fire damage at the start of each of its turns. It or another creature within 5 feet of it can use its action to extinguish the flames, ending the spell.

Instead of a creature, you can target a flammable object with this spell. The object ignites if it isn't being worn or carried.

This spell's damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17 level (4d4).