Greater Necrostrike (5e Spell)
From D&D Wiki
|Casting time:||1 bonus action|
|Components:||V, S, M (a melee weapon)|
|Duration:||Concentration, up to 1 minute|
A stronger version of necrostrike, harming more than just their durability. The next time you make an attack with the weapon used in casting for duration of this spell, on a hit, the target must make a Constitution save or gain a level of exhaustion.
At Higher Levels. When cast at 4th level or higher, the first hit with the weapon used in casting deals an additional 1d8 damage for every level above 3rd. For every two levels above 3rd, they must make another Constitution saving throw.