The Annihilating Fire Dragon Bone was a bone blade forged from the remains of an ancient fire dragon. Shaped like a dragon's horn, it held the soul of an annihilating fire dragon.
Once activated, it could unleash Annihilating Dragon Fire and burn everything to ash.
"The Annihilating Fire Dragon Bone? How could the Flame Immortal Clan possess an Ultimate Dao Immortal Weapon like that?"
Bai Zixu and the others looked grave.
"All members of the Flame Immortal Clan, activate the Annihilating Fire Dragon Bone together!" shouted the elder in the fire-red robe.
Whoosh, whoosh, whoosh!
At once, the Flame Immortal Clan members poured their Fire Element Law power into the Annihilating Fire Dragon Bone.
Roar!
A dragon's roar rang out. The Annihilating Fire Dragon Bone blazed, its flames burning ever fiercer until they gathered into a huge fire dragon hundreds of feet long. Bearing a savage, terrifying dragon's might, it slammed into the curtain of lightning.
Boom!
The lightning curtain shook violently, and the entire Reverse Fate Immortal Palace trembled with it. The force of that attack was terrifying.
"Keep attacking!"
The Flame Immortal Clan experts poured their Law power into the Annihilating Fire Dragon Bone without pause.
Annihilating fire dragons crashed against the lightning curtain one after another, each bearing terrifying dragon's might, as though they would destroy it completely.
Yu Shigang's face grew grim. "Damn it. If they keep this up, they'll break through the defensive formation. Activate the Heavenly Imperial Immortal Transformation Formation!"
"Yes!"
At once, the Imperial Clan's experts activated another formation. Runes crisscrossed the surface of the lightning curtain.
When the enormous fire dragons struck it again, they could no longer cause so much as a tremor. It was as if their attacks had been completely dissolved.
"That's the Heavenly Imperial Immortal Transformation Formation! It