Command the Sealed Room

Choose a room, hall, crypt, shrine, or ruin section within range. For the duration, you know when creatures enter or leave it, and once per round you may cause dust, doors, wrappings, or loose stone inside it to impose disadvantage on one attack or ability check.

This power has its own stable page so it can be linked from any character, item, location, story post, bargain, curse, or future reward.