The Heretical Ruins boss brings devastating AOE burst damage and relentless Burn mechanics, pushing your lineup’s survivability and add-clearing skills to the limit. To conquer this dungeon, you’ll need precise debuff control, strong sustain, and reliable ways to clear Dead Phoenix Nestlings before they overwhelm you.

⚙️ Key Strategies:
🔥 Burn management — deploy heroes like Thia, Catherine, Oggok, Acilia, or Mithrasea to dispel or grant immunity against Burn and other crippling debuffs.
🛡️ Survive the bursts — counter its global damage with shields, Damage Reduction, or even Invincibility/Resurrection from supports like Zeffi, Oggok, Nathaniel, Iola, Rose, or Felosia.
⚔️ Nestling control — the boss takes reduced damage while Phoenix Nestlings live, so clear them fast with sustained or AOE damage dealers such as Vidimir + Rava, Thelendor + Gladys, or Lelwanis + Bernade.

💡 Mastery Tips:
Prioritize Attack Penalty, Healing, Shield, and Damage Reduction to stabilize against heavy AOE.
Add Defense Penalty or Damage Bonus to boost efficiency when clearing adds. Once survival feels secure, swap in Luck, Rare Treasure, or Opportunity for extra rewards.
Tidal Surge is the best Mastery choice here, offering powerful AOE shielding while also helping clear nestlings.

🖼️ Check the infographic for full team builds, crystal combos, and affix countermeasures to master the fiery trials of the Heretical Ruins!📥 Download the Reborn version and enter the world:
https://dragonheir.sgrastudio.com/
📚 Explore the official Wiki for guides & tips:
https://www.dragonheir.info/