Undead Spirit (Skeletal)

HP: 20 + 10/level above 3rd. AC 11 + spell level
Speed: 30 ft. Senses: Darkvision 60 feet
Stats: +1 / +3 / +2 // -3 / +0 / -1
Damage Immunities: necrotic, poison
Cond. Imm. exhaust, fright, paralyze, poison
Multiattack: # attacks is "floor(spell level / 2)"
Grave Bolt: Range 150ft. Hit: 2d4 + 3 + (spell lvl) necrotic dmg