This upload has no credited artist or source work attached, and its only tag is DnD, so its online life is as a tabletop tool rather than a chart song. Short fantasy clips like this circulate on soundboards because dungeon masters need evocative cues they can drop without breaking immersion. The oak, ash and thorn phrase comes from English tree lore, which gives the clip recognition for fantasy fans even without a known film or game behind it, and that folk familiarity helps explain why it keeps being shared for forest, druid and tavern scenes.