In June 2024, Gildor refined the arena spell cooldown reset logic for the TrinityCore/TrinityCore repository, focusing on competitive gameplay balance. He implemented a targeted feature in C++ that ensures cooldown resets only occur when specific criteria are met, addressing unintended resets and improving the player experience. The work involved updating core backend gameplay logic within the Core/Players module, with careful attention to maintainability and traceability by linking changes to issue #30032. Gildor prepared comprehensive tests and documentation to support quality assurance and future merges, demonstrating depth in backend development and game systems engineering within a collaborative open-source environment.