A full mock-up of one of [the cards](https://www.fimfiction.net/blog/984363/friendship-is-card-games-rainbow-dash-presents-bittersweet#comment/5651311) I made based on Rainbow Dash Presents: Bittersweet, with additional paranormal activity provided by Phil Srobeighn.

Laughter ends up as the black Element of Harmony mostly through process of elimination. But hey, you need the full rainbow to make [the rainbow laser.](https://scryfall.com/card/apc/137/legacy-weapon)