In 2012, the superhero-themed card game Sentinels of the Multiverse announced a new expansion— Sentinels of the Multiverse: Shattered Timelines. The expansion was to add additional hero and villain characters themed around time travel and alternate universes, and one of the villains would be a fan submission. Out of 214 entries, my submission was chosen: A supervillain capable of subtly manipulating the timeline to give herself uncanny luck, represented by a mechanic to manipulate decks with a mystic talisman the heroes would be able to steal and use against her.
I both proposed game mechanics and wrote backstory as part of the submission process, and afterward worked with the community to refine them through playtesting. The character art was by Adam Rebottaro.