Hiveblood

Hiveblood is a Charm in Hollow Knight. It heals the last Mask that was lost without having to use Focus. It also makes enemies in the Hive passive.

Usefulness
The regenerating Mask is marked by a small blob of dripping honey that slowly grows bigger. Taking damage again while regenerating starts the process over (at the Knight's current health). In the case of an attack that deals two Masks of damage (such as an explosion), Hiveblood only regenerates one Mask. Finally, healing a Mask with Focus ends the regeneration in progress.

Hiveblood does regenerate Lifeblood Masks gained from the Joni's Blessing Charm, though it takes twice as long (20s). Other sources of Lifeblood — like Lifeblood Cocoons, or the Lifeblood Heart and Lifeblood Core Charms — are not affected.

Hiveblood is decent in combat if the Knight can dodge a boss effectively, but has trouble finding opportunities to heal. As the Knight is likely to not go on the offensive while waiting for Hiveblood to regenerate health, Hiveblood pairs well with Charms that can damage foes while dodging, such as Glowing Womb or Sharp Shadow.

The best use of Hiveblood is to regenerate health in situations where SOUL is not readily available. This makes it very helpful in difficult platforming sections with few enemies, such as the Crystallised Mound in the Crystal Peak, the path to Nailmaster Sheo in Greenpath, the Nail-jumping section to reach a Vessel Fragment in Deepnest, and most prominently, the White Palace and the Path of Pain.

It also serves as the only means by which health may be recovered mid-air, making it useful for the Colosseum of Fools.

Its ability to render the Hive's residents passive makes it very useful on return trips to the area.

How to Acquire
Located in the Hive, below the room where the Hive Knight is fought. Requires defeating the Hive Knight.

Trivia

 * Despite the Hive enemies turning friendly while wearing Hiveblood, their Dream Nail dialogues still show hostility towards the Knight.
 * Before the Lifeblood update, this Charm could be collected simply by walking through the open room after Queen Vespa's room, without having to fight the  Hive Knight.

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