Petrylloc's Gambit is a spell that creates a wall of ice and two walls of stone above a target, which then fall upon it. It was cast in a group casting in 1374 DR by Khelben "Blackstaff" Arunsun and the wizards Sememmon and Ashemmi in order to defeat a sharn at the Sleeping Dragon inn.[1]


  1. Steven E. Schend (July 2006). Blackstaff. (Wizards of the Coast), p. 98. ISBN 978-0786940165.

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