Necromancer (Neutral Killer)

Night Ability 1: Dig up grave - Dig up grave of the dead player and turn him into skeleton (You waste whole night digging up grave)
Night Ability 2: Send skeleton to kill someone (After killing Skelton is destroyed)

Lore - Necromancer… strange man with black robe who have no life on his face who want to see everyone dead

Comments - You can use only one of Night Abilities in one night and you can create one skleton on the time
If you dont use your skeleton in 2 nights in row he will perish

Why do we need a NK that can only kill every other night? It seems extremely underpowered.