Level 20 Wrench On Alt-Fire: Teleport to spawn Cannot carry buildings Being a tool that eliminates exertion by harnessing the electrical discharges of thunder-storms for the vigorous coercion of bolts, nuts, pipes and similar into their rightful places. May also be used to bludgeon.
It fixes, it dents craniums, it's the wonder tool of the century!
— Eureka Effect publicity blurb
The Eureka Effect is a melee weapon for the Engineer. It is a retro-futuristic pipe wrench with a team-colored handle and an atomic symbol etched into the top of it. A spiral antenna, not unlike a Tesla coil, is attached to the head. A switch near the top of the grip is connected to a wire that is plugged into the bottom of the antenna.
Using this wrench prevents the player from being able to haul buildings. Instead, pressing alt-fire will cause the Engineer to perform a taunt for approximately 2 seconds with the weapon, during which he hoists his wrench into the air and is struck by a bolt of lightning, causing him to be teleported directly to the team's active respawn room. Doing so gives him full ammo and health and removes all effects caused by other players in the process and allows him to change his loadout, similar to touching a resupply cabinet. The taunt cannot be activated if the player is in the air or in water.
Switching from this weapon to a different melee weapon will destroy all existing buildings.