warband 1
witch king of angmar 2mt 3ft 3wl crown of command 140
11 orc warriors (4 shields 4 spears 2 bows 1 two handed) 66
mordor troll 100

warband 2
the ubndying 120
12 orc warriors (4 shields 4 spears 2 bows 2 two handed) 72

500 points (498)
26 bodies
4 might (+undying ability) {more can become avalible)
4 bows (tons of magic)
SBG

I think you might find yourself wanting to drop either one of the Nazgul or the Troll and add another Warband in. As it is, though, you should at least swap the bows for more shields or spears. Four ain't really going to cut it.

_________________
Gondor: 2339pts
Rohan: 1318pts
Dwarves: 2482pts
Elves: 1091pts
Mordor: 2305pts
Isengard: 1762pts
Moria: 1463pts
Evil Men: 381pts