Developed and delivered the Eternal Game Format feature for the SWU-Karabast/forceteki-client repository, introducing new UI components that allow users to select formats and receive in-game announcements. The work involved integrating React and TypeScript to ensure seamless interaction with existing game mechanics and user interfaces. Backend alignment was achieved through coordinated changes and pull requests, enabling end-to-end support for the new format. Collaboration with other contributors ensured clear documentation and a transparent commit history. This feature established a foundation for future format expansions and streamlined QA processes, with UI components wired into current interfaces to support efficient validation and testing.