You hurl a glob of molten rock at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 2d6 fire damage.For the rest of the duration,the targets speed is reduced by 10ft,and they take 1d6 poison and fire damage,at the start of each of their turns.

At higher levels

When cast with a spell slot,of higher then 2nd level,the base damage increases by 2d6 per level above 2nd level.