Electric Smoke is intensified, dealing more damage to Titans and Pilots.
— Description

Maelstrom is an upgrade available for the Monarch Titan, via Tier 2 of the Upgrade Core. When picked, it upgrades the Electric Smoke to deal much more damage than previously. Since the Monarch will already have 3 Electric Smokes from the other upgrades, you will be able to deploy many of them at once. Electric Smoke will make a different sound that sounds like vigorous sizzling. Maelstrom is incredibly lethal to pilots and any caught rodeoing your titan are often caught off guard and killed.