Alicorn Down is a recurring common item in My Little Pony series, Scooby-Doo series, and Harry Potter series.
Description[]
The Alicorn Downs are used to revive characters who have been killed off in battle. Like most curative items and spells, the characters can also throw an Alicorn Down at an undead enemies, such as zombies, vampires, skeletons, and mummies, resulting in damage or instant kill, although some undead enemies and bosses are immune to this. Alternatives to an Alicorn Down are the light magic spells, such as Raise and Arise. There is also a Mega Alicorn item in several games that revives all characters after they have been killed off in battle.
Scooby-Doo! The Ending of the End[]
While very common, the Alicorn Down will become free from the alchemist battle costume via the stash skill set.