Cast on a fresh Krakaren corpse, it turns the swarm against itself for a few seconds at a time.
Princess Donut's contribution to the chokepoint grind is a two-spell combination. She casts Second Chance on one of the corpses piling up at the entrances, then Clockwork Triplicate on the result — and the zombie Krakarens wreak havoc on their fellow clones for several seconds before they are torn down. It buys the defenders a breath at a time, repeatedly, for as long as there are fresh bodies.
Donut's raise-the-dead spell, used as a disruption tool.