Bustling Fungus

The Bustling Fungus is a item in Risk of Rain that heals the player for 4.5% of their health after 2 seconds out of combat. There is no cap on how many times Bustling Fungus's effect will stack. However, having more than 22 stacked will heal more than your total health per second, making further stacks largely useless outside of co-op. Unlike the Sprouting Egg, to activate the healing effect one must stand completely immobile and not perform any kind of action, including activating shrines or opening chests.

Tactics

 * A very good item for co-op, as this item will also heal any other players standing on top of you while the fungus takes effect.
 * The amount healed per second is based on the health of the player who owns the active fungus. Other players in the fungus's area of effect will receive the same health per second, regardless of what their maximum health is.
 * Multiple players with Bustling Fungus cannot overlap their fungus for higher effect. If two players stand close enough to each other, only one fungus will activate.
 * It is also very good for item stacking as every one adds quite a bit of health regeneration.

Item Synergies

 * Time Keeper's Secret will help if you're in quite a pinch on health, as Time Keeper's Secret will pause the time, allowing your Bustling Fungus to initiate the healing process.

Trivia

 * The expected date of delivery is listed in the late 1700s. This is outrageously far from the date of the game's events and cannot be genuine unless time travel has become possible.