Elixir is an ability for the Commando kit in Battlefield Heroes. It gives the player a short burst of speed as well as a shield. During the first four or five seconds of activating the ability, the Commando will leave behind a large gust trail of smoke. After the smoke effect subsides, however, the ability leaves behind a thin white trail, which can be used to pinpoint the player's location. This thin, white trail is especially visibile at night. Elixir also creates a large, blue aura around the user, making him very visible even while in stealth.