Gas-emitting boulders fired every ninety seconds, walking a precise green poison barrage across the ursine town.
Two moon elves operate a distant siege engine that throws large rocks into the settlement. Each impact destroys structures and emits humid green poison clouds, while the gunners advance their aim block by block with Battleship-like accuracy.
The poison repeatedly fails against immune defenders but drives Mongo into storage and forces the ursine population to shelter.
Large incoming stones bursting through buildings and releasing humid, green-tinted clouds over smoke-filled streets.
The attack pins the town and creates the need for Carl's long-range counterstrike.