Earthbind LodestoneLevel 18 Uncommon

When thrown to the ground, this smooth metallic stone hits with such force that it knocks airborne creatures from the sky.

Wondrous Item        85,000 gp

Power ✦ Daily (Standard Action)

Throw this stone to the ground in your square and make an attack: Close burst 5; affects creatures with a fly speed; +23 vs. Fortitude; on a hit, the target loses the ability to fly or hover until the start of its next turn. If a target is airborne when it is hit, it falls.

Published in Adventurer's Vault, page(s) 170.