Jigglypuff (SSBU)/Dash attack
Leaps forwards while doing a headbutt. The clean hit can KO around 100% at ledge, and can be comboed into from a jab. The sourspot has niche combo potential and catches rolls, but is very unsafe on shield. Overall, dash attack is most well known for its sweetspot being Jigglypuff's most reliable grounded kill option, along with up tilt.