Lightseed

Behaviour and Tactics
Completely harmless, not even dealing contact damage. Hitting them with the Nail provides no SOUL, although they do give SOUL if they are hit with the Dream Nail.

Multitudes of them spawn before the battle with the Broken Vessel, attempting to fill it with Infection. Killing these Lightseeds does not increase the number count in the Hunter's Journal.

Location
Lightseeds are found in the area in Ancient Basin leading to Broken Vessel. After Broken Vessel is defeated, they no longer show up in this area. They are also located in the Infected Crossroads. The Lightseeds in the room east of the lift leading to the City of Tears may not always show up.

Trivia

 * They cannot be harmed by any summoned familiars such as Grimmchild or  Weaverlings.
 * In the Kickstarter campaign there is a GIF of a Lightseed popping out of a Husk Warrior after The Knight kills it. They probably were to spawn every time an infected enemy was killed, however, this is not the case in neither the other Kickstarter campaign images nor the actual game.

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