Worked on the azerothcore/azerothcore-wotlk repository to enhance gameplay stability and reliability by addressing two critical bugs. Focused on encounter scripting and spell interaction, the developer refactored the Hyjal instance script in C++ to improve trash mob counting, introducing private state management and phase-aware tracking for accurate world state updates. Additionally, they updated database entries and smart scripts to ensure Zapped Giants respond correctly to the Transmogrify! spell, refining targeting logic for specific creature types. This work demonstrated careful attention to code quality, leveraging C++ and database management skills to deliver targeted improvements that reduce QA overhead and improve player experience.