Undead Fortitude. If damage reduces the draugr to 0 hit points, it must make a Constitution saving throw with a DC of 5+the damage taken, unless the damage is radiant or from a critical hit. On a success, the draugr drops to 1 hit point instead.
Longsword. Melee Weapon Attack: +4 to hit d20+4 , reach 5 ft, one target. Hit: (1d8 + 2) 1d8+2 slashing damage. Shortbow. Ranged Weapon Attack: +2 to hit d20+2 , reach 80/320 ft, one target. Hit: (1d6 + 1) 1d6+1 piercing damage. (Ancient Nord Arrows)