Eldrich Fist

The touch of your fist. Until dispelled all quarterstaffs and unarmed attacks and you make are spell attack, having resistance or inmunity or spells doesnt affect the original damage but it does to the eldrich fist. On a hit, the target takes 1d8 extra force damage, the extra quarterstaff attack is a 1d10 and if you use the Forgotten Lesson first effect 2d8

At Higher Levels. When you cast this cantrip at 3rd level the damage increases by 1d8 and also at level 5th 11th and 17th

At  lvl 6 the effect acts 2 times instead of 1 with the same amount of rolls.