If the Forest Ridge is razed by an attacking champion, feral halflings eat the winning champion, causing the card (and any possessions) to be discarded.
Copyrights:
TSR
Wizards of the Coast
Being one of the few Dark Sun realms with such abilities, The Forest Ridge does not have a realm champion or limitations on the attackers. However, it enacts its vindictive power only when the realm is razed in combat. This realm's special power is useless if it is razed outside of combat. The Forest Ridge's special powers also don't work if it is discarded during combat (as opposed to just being razed).
When this realm is successfully razed during combat, the champion who razed it, as well as any attachments, are discarded. When you want to get rid of one champion, this can be very useful. Simply declare no defense, raze the realm, and send the offending champion to the discard pile when your opponent attacks with this champion.