Claws of the Red Dragon

Fire springs from your hand to deliver a burn to a creature you try to touch. Make a melee spell attack against the target. On a hit, the target takes 1d8 fire damage, and it can't take reactions until the start of its next turn. Targets that are flammable must also make a DEX save (8 + PB + DEX modifier) or be burned for 1d10 fire damage at the start of their next turn until they take a bonus action to put out the flames.

The spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).