From GameWatcher: “It’s no secret that a stable party of friends can have an easier time navigating and taming Valheim’s dangerous wilderness. Knowing that you can rely on someone to help fend off monstrous assailants makes you worry less as you explore the game’s world. But failing to decide upon a common objective can foil your plans of co-op survival, which is where the Necromancy mod comes in.”

Source: N4G PC This Valheim Necromancy Mod Lets You Summon A Pack of Skeletal Friends