Purpose of unit is to balance out the roster because Chaos would have three (3) fast training troops while Order doesn't have any, and the Sicklewrath got nerfed to the ground.
Take the current stats of the Sicklewrath, and put it on a 50 Gold unit that trains for 7 seconds
Weapon would probably be a random choice between the Minion's trident, a sickle on a stick, and a spear. It's literally just a Stick with a straw hat.