Magic weapons. The minion's weapon attacks are magical.

Undead Fortitude. If damage reduces the minion to O 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 minion drops to l hit point instead. 

Unending Devotion (1/day). When the minion fails the saving throw for Undead Fortitude, it can choose to succeed instead, as long as it can see or hear you.

Slam. Melee Weapon Attack: +9 to hit, reach 5 ft., 1 target. Hit: (1d8+ 4) [bludgeoning] + (1d4) [necrotic] damage. 

Subdue. If you are hit by an attack and the minion can see or hear you, it can attempt to grapple the attacker. If the attacker isn't within the minion's reach, instead of grappling, it can move up to its speed toward either you or the attacker (you choose which it moves toward).

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