Spring Trap

The in Dungeon Keeper expelled enemies from your dungeon by sending them flying through the air. Ghosts and Dragon Whelps, however, simply flew over them, and Immortals were immune to them. Once triggered, they required rearming, which cost gold but was instant. They were not upgradeable, required a level 3 Workshop to access, and took a 1x1 tile.
==Notes==
*Spring Traps did not work on Immortals, Ghosts, Dragon Whelps, Guild Flag Minions, or other flying minions during Survival Raids.
==Stats==
Targets 	Ground
Damage Type 	Physical
No. of Targets	1
Re-arm cost 	750 Gold
==Traps Available==
Workshop	Traps Added	Max Traps
Level 3 	1 	1
Level 4 	1 	2
Level 5 	2 	4
Level 6 	2 	6
Level 15	1 	7
Level 23	2 	9
Level 28	2 	11
Level 34	1 	12
Total number of traps is either 12 or 13 as of patch 8.2