"This is the Heart of the Forest," I explained calmly, holding it up so the emerald light cast shadows across their stunned faces. "Or, you can call it a Titan's Heart. It is the intact mana core of a mutated Treant that had evolved to an apex boss level in the Wilderness."
I looked directly at Arthur.
"As you can sense, the mana inside this thing is incredibly dense and entirely pure. In our current predicament, where the magical barrier is failing due to the Frostward Core burning out... this Heart can be used as an immediate, high-capacity replacement to power the fortress wards."
The glowing emerald light of the Titan's Heart pulsed rhythmically, casting long, eerie shadows across the frozen parapet. For a long moment, the only sound was the howling wind.
Arthur, Viktor, and Rumina stared at the massive core, completely mesmerized by the sheer density of the natural mana radiating from it.
