Fargo's Mod/Seismic Actuator

"The planet trembles from the core!"

The Seismic Actuator is a boss summoning item. Upon usage it will summon 10 Destroyers per Seismic Actuator in the stack, after which the entire stack is then consumed.

If 10 Seismic Actuators were used in the stack, completing the swarm rewards the player with a.