Lothir lashes out with a bite on Ringo as the demon tries to trip him - and scores a rending hit along the beast's arm (critical! 24-10 = 14hps, now 117hp).
Ringo fails his trip, but George succeeds!
Lothir is prone and now has a Std action remaining.
OOC: My GM narration temptation is to have Lothir tumble off the roof to the floor as he leaps forward and is fouled by George's trip, but that seems perhaps a bit too much liberty in a combat-focused arena game. BTW - I'm assuming the dragon gets +4 for having more than two legs, but the herezou doesn't since they stand on two legs to attack.