Properties
Bonus
+3 Tough saves against necromancy and +2 Mind saves against fear
Uses
1d4 charges
Effect
Only wizards may use it. Each charge draws an unbroken circle up to 20 feet across that holds for one hour: nothing summoned, called, conjured, or undead may cross it in either direction, and any such creature caught inside is pinned to the ground for the duration. Scuffing the line through ends it.
About
Chalky white stub worn flat down one side, leaving a dry line on anything it is dragged across.