Ley Leech 2014

You channel destructive ley energy through your touch. Make a melee spell attack against a creature within your reach. The target takes 8d10 necrotic damage and must succeed on a Constitution saving throw or have disadvantage on attack rolls, saving throws, and ability checks. An affected creature repeats the saving throw at the end of its turn, ending the effect on itself with a success. This spell has no effect against constructs or undead.

When you cast this spell using a spell slot of 6th level or higher, the spell's damage increases by 1d10 for each slot level above 5th.