Ostrox Boneglaive — guide

In short

Ostrox Boneglaive is an Epic Support from the Undead Hordes with the Dark affinity. His value is a team-wide Block Buffs plus a cleanse with Accuracy Up, which makes him a Hydra specialist (5/5) and a near no-show in dungeons (2/5). Build priority: Speed and Accuracy first, HP second — his heal scales off his own MAX HP.

Strengths

• A2 puts Block Buffs on every enemy: 3 turns when 4+ enemies are alive, 2 turns when 3 or fewer — excellent against Hydra heads.
• A3 removes one random debuff from all allies and grants Accuracy Up 50% for 2 turns.
• Aura: +40 Accuracy to all allies in all battles — free stats for the whole team.
• Passive gives a 20% chance to reflect a debuff back at the enemy trying to place it.
• A1 heals the lowest-HP ally for 10% of his own MAX HP and dumps one of his debuffs onto the target.

Weaknesses

• All his damage scales off ATK while he is built as a support — he hits softly and is not a damage dealer.
• Low base stats: 16,515 HP, 1,035 DEF, 98 SPD — he folds under focus and eats crowd control.
• Cooldowns of 4 and 6 turns; without Speed he spends half the fight on A1.
• No revive and no real healing — a single 10% heal is not enough for hard content.

Where to use

Hydra is home (5/5): Block Buffs and the cleanse carry the fight. Next is Faction Wars (3.5/5) for the Accuracy aura and debuff removal. In Clan Boss, Chimera, Arena and Hard mode (3/5 each) he is usable but situational. Dungeons (2/5) and Doom Tower (2.5/5) are not his content.

Stats and gear

• Speed: 200–250+ so A2 and A3 come back on cooldown.
• Accuracy: 250–350 for Hydra (remember the +40 aura for the team).
• HP: 45,000–60,000 — this directly increases his A1 heal.
• DEF is secondary; ignore C.RATE and C.DMG.
• Sets: Accuracy and Perception. Relics: Orb of Transfixion, Perched Shadow.

Masteries and blessings

Go down the Support tree: Invigorated and Targetfinder are the core picks, rounded out with Expeditious Exploitation and Gathering Momentum. Blessings: Survival Instinct as the default survivability pick, Cruelty if you want extra Hydra damage.

Tombs

Book A2 first: ranks 4–5 push the Block Buffs chance to a guaranteed 100%, and rank 6 cuts a turn of cooldown. Then A3, which has two cooldown reductions. A1 is not worth tomes.

Verdict

A narrow but genuinely strong Hydra tool: Block Buffs, a cleanse and an Accuracy aura in one slot. Outside Hydra he is a Faction Wars filler at best.