Spacefrog wrote:
- Where do I find out who can be a warband captain and who can't?
Any hero can lead a war band, unless they are marked as "Independent" (eg: Spider Queen). The first few pages of your sourcebook describes this, there is a flag symbol to denote them.
Spacefrog wrote:
- How is area of effect attacks such as the dragons fire breath resolved against a model with more than one part, such as cavalry and Mûmakil against normal shooting they kind of give cover to each other
For cavalry, it's considered "one model" for most purposes, I don't think you roll an "in the way" for dragon fire. Not sure about the Mumak, never has come up since we don't play evil vs evil.
Spacefrog wrote:
In any case I just ordered a spider queen, two warg chieftains and two boxes of wargs together with Drûzhag who should be able to lead warbands who are too small for Drakes
It's probably too late, but it's unlikely you'll need more than one warg chief. You're starting out pretty hero-heavy as it is. It is possible to field all-hero armies, but a warg chief isn't usually in them, they don't have the Might to leverage. Not sure what you mean by "warbands who are too small for Drakes"...a warband's size is not dependent on the hero leading them.
Spacefrog wrote:
- And just to keep asking, If Drûzhag gets a courage bonus from some drums, does he pass on his boosted courage to any beasts in range of his ability.
This is one of those "best to read the rules and try a game or two", because given your knowledge of the game the answer just might be more confusing
But FWIW...
Once your army is cut down to half its models you are considered Broken (one reason why all-hero armies are difficult). Once Broken, each model has to make a Courage test each turn to stay on the battlefield. Heroes have a special rule: they can roll their Courage first (it tends to be better) and augment the roll with Will if necessary. If they pass, warriors within 6" don't have to roll. There are some exceptions though, eg: warg chiefs only affect wargs; Durburz's range is 12", not 6", etc... So a drum on the field is good for everyone, you just have to decide whether it's worth replacing 70-100 points of other models. 100 points is a goblin hero and 12 goblins, so that might boost your Break point to the point where a drum is superfluous.
Shamans like Druzhag have another option, the Fury spell: any affected beings (and for Druzhag it's only the beasts) within 6" no longer have to roll Courage for anything, whether it's charging an Elf lord, or being Broken.