Zaarani's SolitaireLevel 10 Uncommon

The power of this golden spherical gem drives your foes to the ground.

Wondrous Item        5,000 gp

Power Encounter (Free Action)

Trigger: You score a critical hit on your turn.

Effect: The target of the critical hit slides 2 squares and is knocked prone.

Published in Seekers of the Ashen Crown, page(s) 24.