The exploding wagons sent shards of wood chasing after the fleeing members of the convoy. The cracked and ruptured ground made passage difficult, and the slowest runners were struck by the shards, either being seriously wounded or dying if they were unlucky.
Those who weren't struck by the shards of wood didn't need to worry about feeling left out since the Rat King had launched its own attacks. Pulling rocks out of the ground and sending them flying toward the fleeing humans with enough power to blast through their bodies. The King also manipulated the ground to trap and break their legs if they didn't get hit by the first volley of projectiles.
It didn't take long for most of the members of the convoy to die.
As the heat from the Rat King spread, the wagons and goods that hadn't been flying too far started catching fire. That was only the beginning as the corpses and any other objects nearby also started burning.