= Osseous Basic = [https://img.pvme.io/images/zOznCIoC2V.png Guide illustration] ​ == General Information == ⬥ Osseous has 350,000 LP, across a single fight phase. ⬥ Osseous is immune to Ranged, Melee and Magic damage. ​ Other guides: [/guides/?q=rex%20matriarchs Rex Matriarchs guides] [https://pvme.io/pvme-guides/afk/afk-osseous/ AFK Osseous] ​ == Gear, Relics and Familiars == [https://presets.pvme.io?id=d50b1a3c-f1f3-4fb0-8f48-43f548f10f64 Example Preset] necromancy ​ [https://firebasestorage.googleapis.com/v0/b/preset-images/o/images%2Fd50b1a3c-f1f3-4fb0-8f48-43f548f10f64.png?alt=media Guide illustration] == Fight Mechanics == Avoid using Darkness darkness at Osseous as it will often negate your defensive abilities, for example using res on a big hit to heal you may not work. ​ === Attack Rotation === 2x auto → 1x range → 1x auto → '''Minion Summon''' → 3x auto → 1x '''Minion Launch''' → 2x auto > '''Osseous’ Roar''' → 2x auto → '''Munch''' > 1x auto → ''Repeat'' ​ === Auto Attacks === '''Mechanic:''' Osseous attacks primarily with Necromancy damage, with some Ranged attacks. '''Solution:''' ⬥ If camping prayers, use a Necromancy protection prayer (deflectnecromancy / protectfromnecro) ⬥ Pray soulsplit once you are comfortable surviving mechanics ​ === Minion Summon [https://img.pvme.io/images/QGYxu2jdtk.mp4 (Example)] [https://img.pvme.io/images/QGYxu2jdtk.mp4 Video] === '''Mechanic:''' Osseous slams the ground, dealing heavy melee damage and summoning baby skeletons that can heal her. '''Solution:''' ⬥ Use res to heal from the melee hit ⬥ If Resonance is unavailable, pray protectfrommelee or deflectmelee and use devo ⬥ Alternatively, reflect can be used to reduce damage ⬥ Ignore the skeletons initially and prepare for the next mechanic ​ === Minion Launch [https://img.pvme.io/images/YJ6LKwQinf.mp4 (Example)] [https://img.pvme.io/images/YJ6LKwQinf.mp4 Video] === '''Mechanic:''' Osseous throws minions at you, stunning you and spawning additional skeletons. '''Solution:''' ⬥ Stay targeted on Osseous ⬥ Clear the skeletons using any of these approaches: ‎ ‎ ‎ ‎• threadsoffate → volleyofsouls / fingerofdeath ‎ ‎ ‎ ‎• commandzombie (after the stun) ‎ ‎ ‎ ‎• Three casts of spectralscythe ⬥ Target and kill any remaining skeletons to prevent explosion damage ​ === Osseous’ Roar [https://img.pvme.io/images/Hti5nPqCgd.mp4 (Example)] [https://img.pvme.io/images/Hti5nPqCgd.mp4 Video] === '''Mechanic:''' You are pulled into melee distance and bound in place. '''Solution:''' ⬥ Ensure all skeletons are cleared before this mechanic ⬥ Prepare defensives if damage overlaps with other mechanics ​ === Munch [https://img.pvme.io/images/txcpikDFS4.mp4 (Example)] [https://img.pvme.io/images/txcpikDFS4.mp4 Video] === '''Mechanic:''' Osseous binds you and prepares a high-damage bite attack. '''Solution:''' ⬥ Deal damage to fill the bar above Osseous ⬥ Use any damage-negating defensive, like res, disrupt or divert to completely block ​ == Helpful videos == ⬥ [https://youtu.be/_itR-4abuAo Example kill] ​ [https://www.youtube-nocookie.com/embed/_itR-4abuAo Embedded video] == Source and attribution == Source: [https://pvme.io/pvme-guides/rs3-full-boss-guides/rex-matriarchs/osseous-basic/ Osseous Basic], by PvME contributors. Licence: [https://creativecommons.org/licenses/by-nc-sa/4.0/ CC BY-NC-SA 4.0]. Do not silently relicense. Captured 2026-11-10T14:26:11Z. Source HTML SHA-256: 7a35018ffd6cef4670f52fe502868a0103e52f0089a8a457fa118b251e2336c7. Changes: Navigation and typography adapted. Original sanitized source HTML and its text hash are retained separately. Source channel and message references are repaired using the pinned guide repository and public directory/identity evidence; navigation wording is adapted for the web. Every change is recorded in the reference repair ledger. Unverified destinations and contributor names remain explicitly unavailable. Legitimate external community and attribution links are preserved and labeled. Original media is embedded from providers; media rights are separate from guide-text rights. Layout converted to basic wikitext. Rich structures require manual review. Game-version accuracy is unverified; consult the current upstream guide.