Or maybe -- there are a whole bunch of "base" orcs scattered throughout a fairly wide level range. So if you want a higher-level orc, you start by modifying the 13th level Orc Champion rather than the 3rd level Orc Raider. (Edit: Beaten by Fallen Seraph!)malraux said:I think the goal for the adding a few levels is to grab something that's close to what you want and shim it to the right spot. For more something like 10 levels, you'd want to go a more formal route of adding class levels to an orc. This is more like a way to get a level 7 "tougher than average" orc as part of a fight.
These rules for improving monsters are nice to know. But what about brand new monster creation? In particular, each 4e monster comes with a set of powers with unique names and effects. How do you invent a new 20th level monster and pick a set of unique, self-contained powers that are balanced for that level?