Shielding FocusLevel 10 Uncommon

This small silver shield increases the strength of your protective circles.

Wondrous Item        5,000 gp

Property

You can use this item as an optional focus for the Magic Circle ritual by placing it at the center of the circle when you complete the ritual. While it remains there, a creature of the affected origin passing the boundary takes double the damage the ritual would normally deal, and the circle does not break until the end of that creature's next turn.

Published in Dragon Magazine 387, page(s) 29.