Voadam said:PH II has a special ranger variant. They give up animal companion and at 4th level an opponent they hit with missile fire is considered flanked for 1 round for all those in melee combat.
I like this variant a lot.
It doesn't last for 1 round. It lasts either until the start of your next turn OR until one of your allies strikes it, whichever comes first. So, only 1 ally can get this bonus, and it's only for 1 attack (not a full attack). Still, it's a pretty nice help for the rogue.