Blue Mold

Blue veins stratify through an enemy creature's body, spreading from your touch. Blue cheese may be harmless, but this spell is not. Make a touch spell attack against the target. On a hit, the target takes 2d8 poison damage and must make a constitution saving throw. On a failed save, the target is poisoned until your next turn. 

 At higher levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.