A field of force contracts around your enemies, crushing them.

Encounter   ✦     Arcane, Force, Implement
Standard Action      Area burst 1 within 10 squares

Target: Each creature in the burst

Attack: Charisma vs. Reflex

Hit: 2d6 + Charisma modifier force damage, and the target takes a -2 penalty to attack rolls until the end of your next turn.

Published in Player's Handbook 2, page(s) 142.