Command an army of skeletons because I'm Overlord fan.
Skeletons possess immunity to cold damage attacks, slashing attacks, and piercing weapons. Skeletons prove to be relentless combatants, fighting without seemingly suffering from neither pain or exhaustion. Unlike their zombie counterparts, skeletons were agile and fast on their feet.
They are relentless combatants, fast and agile, no pain or exhaustion. They don't need to eat/sleep/rest unlike the rest of the options.