My first mordor army (done from the rulebook)

[King Arthur]

Warband 1-
Leader-Gothmog-shield and warg (able to get were he needs to be)-150pts
12 morranion orcs shields-96pts

Warband 2-
Shagrat with shield (additional might)-60pts
6 orc warriors with spears-36pts
4 orc warriors with spears and shields-28pts
orc warrior with banner-30pts
Mordor troll-100pts

[Jobu]

This army is too small, drop the troll and pick up another warband. You also do not have any archers, which are no absolutely necessary but are good for picking off supporters, use trackers. If you really wanted to keep the troll you could drop gothmog for an orc morranon orc captain with shield and still get another warband.

You might also consider dropping the banner and gothmog and using the dark marshal instead, then you get casting and a 6 inch banner. He would also be your anti hero with the casting( transfix/compel )so you could still drop the troll and pick up another warband.

[kingcici]

i agree it is a very small army you should have at least 15 orcs and 6 archers

[lukefrywalker]

Are archers really necessary for an orc list?