What’s the best way to set up a portal near a boss arena in co-op?

Setting up a portal near a boss arena in Valheim is a critical strategy for co-op players, as it allows for quick respawns and restocking during intense battles. The first step is to ensure you have the necessary materials to craft a portal: 20 Fine Wood, 2 Surtling Cores, and 10 Greydwarf Eyes. Fine Wood can be obtained by chopping down Birch or Oak trees in the Meadows or Black Forest biomes, while Surtling Cores are found in Burial Chambers or by defeating Surtlings in the Ashlands. Greydwarf Eyes drop from Greydwarves, which are common in the Black Forest.\n\nBefore heading to the boss arena, establish a base with a portal at your main settlement. This portal will serve as your return point. Name the portal using the same label as the one you plan to place near the boss arena. Portal names must match exactly for them to connect, so double-check the spelling. For example, if you name your home portal ''Boss1,'' the portal near the arena must also be named ''Boss1.''\n\nWhen approaching the boss arena, scout the surrounding area for a safe location to place the portal. Ideally, this should be within running distance of the arena but far enough to avoid aggroing the boss or nearby enemies. For example, in the Black Forest biome, place the portal behind a large rock or tree to shield it from Greydwarves or Trolls. In the Mountains biome, find a flat area away from Drakes or Wolves.\n\nOnce you''ve identified a safe spot, clear any nearby enemies and place the portal. Ensure you have enough materials to craft a workbench nearby, as portals require a workbench to be built. Place the workbench first, then the portal. If you''re in a dangerous biome like the Plains, consider building a small shelter around the portal to protect it from Fulings or Deathsquitos.\n\nA common challenge is running out of materials during setup. To avoid this, always carry extra portal materials in your inventory or on a cart. If you die while setting up the portal, your co-op teammates can retrieve your items and finish the setup. Additionally, if the boss arena is in a biome with harsh weather conditions, such as the Mountains, bring Frost Resistance Mead or Wolf Armor to survive the cold.\n\nAfter the portal is set up, test it by traveling back to your base and returning to the arena. This ensures the connection is stable and that you can quickly regroup if needed. During the boss fight, designate one player as the ''resupply runner'' who can use the portal to fetch more arrows, potions, or food while the others keep the boss engaged.\n\nFinally, remember that portals cannot transport metal ores or ingots. If you need to bring upgraded gear, craft it at your base and carry it through the portal. For example, if you''re fighting Bonemass in the Swamp biome, ensure your Iron Mace and armor are fully upgraded before heading to the arena.\n\nIn summary, setting up a portal near a boss arena requires careful planning, resource management, and teamwork. By following these steps, you and your co-op team can maximize your chances of success in Valheim''s challenging boss fights.