Undead Fortitude. If damage reduces the zombified piglin 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 zombified piglin drops to 1 hit point instead.

Pack Tactics. The zombified piglin has advantage on an attack roll against a creature if at least one of the zombified piglin allies is within 5 ft. of the creature and the ally isn't incapacitated.

Fast Hostility. If the zombified piglin get's attacked by a creature or sees a creature attack a diffrent zombified piglin, unless it is killed in one hit, it instantly becomes hostile towards that creature until no zombified piglins can see it anymore.

The zombified piglin makes two Gold Sword attacks

Gold Sword. Melee Weapon Attack: +5 to hit reach 5 ft., one target. Hit: 6 (1d8 + 2); slashing damage.