GG p16

Rot

1-level Necromancy

You extend your hand toward a creature you can see within range and infect the target with a horrible disease, causing their flesh to form pustules and smell of decay. The creature must succeed on a Constitution saving throw or take 2d12 necrotic damage.
 
At higher levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d12 for each slot level above 1st.