Demonic Fire Bolt

You hurl a mote of demonic fire at a creature or an object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d10 Fire damage. A flammable object hit by this spell starts burning. 

At the beginning of targets each turn, must make a Con saving through (Spell DC) on a fail target takes an additional 1D4 fire damage. 

When casting this spell the caster must make a DC 10 sleight of hand check or be revealed as casting a spell of demonic origin.

Cantrip Upgrade. The damage increases by 1d10 when you reach levels 5 (2d10), 11 (3d10), and 17 (4d10).