# Arcane Study Charm *Charm* After spending a [Long Rest](3-Mechanics/CLI/rules/variant-rules/long-rest-xphb.md) in your "Bastion", you gain a magical Charm (see ""Supernatural Gifts"" in "chapter 3") that lasts for 7 days or until you use it. The Charm allows you to cast [Identify](3-Mechanics/CLI/spells/identify-xphb.md) without expending a spell slot or using Material components. You can't gain this Charm again while you still have it. *Source: Dungeon Master's Guide (2024) p. 336*