What’s the optimal way to use the Bonemass power during boss fights?

The Bonemass power is one of the most valuable tools in Valheim, especially during boss fights. This power, unlocked by defeating the Bonemass boss in the Swamp biome, grants you a 50% reduction in physical damage for 5 minutes. This makes it ideal for surviving tough encounters, particularly against bosses that rely on melee attacks or physical damage. To use it effectively, you need to understand its mechanics, timing, and how to maximize its benefits during combat.\n\nFirst, ensure you have activated the Bonemass power at a Sacrificial Stone. This requires placing the Bonemass Trophy on the stone, which is done by interacting with the stone and selecting the trophy. Once activated, you can use the power by pressing the F key (default keybind). Keep in mind that the power has a 20-minute cooldown, so timing is critical. Use it when you anticipate taking heavy damage, such as during a boss''s most aggressive phase.\n\nDuring boss fights, the Bonemass power shines against enemies like The Elder or Moder, who deal significant physical damage. For example, when fighting The Elder in the Black Forest, his stomp and vine attacks can quickly deplete your health. Activating Bonemass power before engaging in close combat will drastically reduce the damage you take, allowing you to focus on dealing damage without worrying about healing constantly. Pair this power with high-tier armor like Iron or Wolf Armor for even greater survivability.\n\nAnother key strategy is to combine the Bonemass power with healing items and buffs. For instance, consume a Health Mead or a Serpent Stew before activating the power to ensure your health pool is maximized. This combination makes you nearly invincible for the duration of the power, giving you a significant advantage in prolonged fights. Additionally, consider using a shield to block incoming attacks, as the damage reduction from Bonemass will stack with the shield''s blocking ability.\n\nFor ranged-focused bosses like Moder in the Mountains, the Bonemass power is still useful but requires a different approach. Moder''s frost breath and melee swipes can be mitigated with the power, but you should also focus on positioning. Use the power when you need to close the distance or when Moder is grounded, as this is when she deals the most physical damage. Pair this with Frost Resistance Mead to counteract her frost attacks.\n\nOne common challenge is managing the cooldown of the Bonemass power. Since it lasts only 5 minutes, you need to plan its use carefully. For example, during the Yagluth fight in the Plains, activate the power when Yagluth begins his meteor shower or ground slam attacks. This ensures you survive his most devastating moves while conserving healing items. Always keep an eye on the cooldown timer and plan your next activation accordingly.\n\nFinally, remember that the Bonemass power is not a substitute for proper preparation. Always bring the best gear, food, and potions for the fight. For example, when preparing for the Bonemass fight itself, use Poison Resistance Mead to counter his poison attacks, and pair it with the Bonemass power for maximum survivability. This combination makes the fight significantly easier, even for new players.\n\nIn summary, the Bonemass power is a game-changer for boss fights in Valheim. Use it strategically to mitigate physical damage, combine it with healing items and buffs, and time its activation to counter the boss''s most dangerous attacks. With proper planning and execution, this power can turn even the toughest battles in your favor.