Magical Trap
Magical
Trap
Stealth
DC 25 (expert)
Disable
DC 27 Thievery (master) to painstakingly remove the lintel without triggering the magic, or dispel magic (4th rank; counteract DC 25) to counteract the rune
Curse the Intruders [Reaction] (curse, divine)
Reset
The trap resets when the door is shut.