Dream Quest(2014) introduced the Roguelike deckbuilder as a game genre. The genre later became popular with the help of Slay the Spire in 2017. As the genre is still fairly new, there are not a lot of tools for designing games of said genre. Taking inspiration from games of the same genre could be a solution to such a problem, one way to do so is via modding. Slay the Spire offers an extensive modding API to users which lets users create new cards, items, events, and even characters. By utilizing these features, it is possible to create a concept for a new game. To use the API, however, would require users to be familiar with programming, which could take a long time to learn for a beginner. Thus, a UI, The Creator was created to let users without experience create mods for Slay the Spire. The UI lets users create cards with different actions and properties without the need to interact with the source code.