Topi

The topi has advantage on saving throws against any effect that turns undead.

If damage reduces the topi 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 topi drops to 1 hit point instead.

Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) slashing damage plus 2 (1d4) poison damage, and the target must succeed on a DC 11 Constitution saving throw or be poisoned until the end of the target's next turn.