Scent Origin is a Lunar spell that allows players to see the scents and smells of herbs that they can use for Herblore. When used, any searchable area or farming patch that has herbs buried in it will glow blue. When used on a compost mound familiar, it will automatically grant you one grimy herb ranarr or above, though your familiar will take double the damage from attackers for a half-hour after one casting. The spell effects do not stack, so you may cast this spell again even if a half-hour hasn't passed yet.