Irina's smirk widened as she stepped toward the wall and pressed her hand against a glowing panel. Mana surged through her fingertips, activating a mechanism that rarely saw use. The floor beneath them vibrated faintly, and the entire arena began to shift. Targets retracted into the walls, replaced by intricate formations and dynamic structures—pillars, walls, and elevated platforms—that rose from the ground in smooth, deliberate motions. The changes created an environment designed to push the combatants to their limits.