Ammunition of Slaying

This magic ammunition is meant to slay creatures of a particular type, which the DM chooses or determines randomly by rolling on the table below. If a creature of that type takes damage from the ammunition, the creature makes a DC 17 Constitution saving throw, taking an extra 6d10 Force damage on a failed save or half as much extra damage on a successful one.
After dealing its extra damage to a creature, the ammunition becomes nonmagical.

1d100	Creature Type
01–10	Aberrations
11–15	Beasts
16–20	Celestials
21–25	Constructs
26–35	Dragons
36–45	Elementals
46–50	Humanoids
51–60	Fey
61–70	Fiends
71–75	Giants
76–80	Monstrosities
81–85	Oozes
86–90	Plants
91–00	Undead