There are a lot of unique features in Zulu Hotel(ZH) that general UO does not have, levels are one.
With ZH you can pretty much max out all skills to build a Power Player or stem into classes, this is not possible with this 'flavor' of UO because ZH was a unique version of how Ultima Online is played, basically a Mod of sorts.
Having help run one of the first iterations of ZH Australia many moons ago I can totally understand the confusion coming from that variant of UO.
As Henry mentioned the level cap is 720 skill points total.
You can invest these points into any skill you like to a general max of 100 or a max powerscroll level of 120 in a skill.
There are some skills that do buff other skills for instance Lumberjacking will actually give you a chance of DCI on certain weapons so the person with Lumberjacking could potentially win but its an arguable topic among PvP players.
There is OSI Necromancy, not the ZH variant of necromancy and no Element books either.
The magic systems available are:
Bushido / Ninjitsu I consider more skills than spells but they are documented as such here:http://www.uoguide.com/Spells
Cannot comment if Henry has Mysticism working here or not(been a long time since I have been around).
For the most part info here is reasonably accurate BUT being an ML era shard, there maybe features that do not work or have been changed.http://www.uoguide.com/
Well worth the look over for understanding skills etc.
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