1. It's an anti-melee build. Places with predominantly melee foes will be farmable. You'll need to make sure you can kill them before Mist Form runs out (22 seconds with a 20% enchant mod). If you can't, fit Arcane Echo in there somewhere. You may have energy issues with small mobs though. It would probably be better to find mobs you want to farm and find a build for it rather than looking for places that build can farm though. I don't think anyone has used Mist Form for years. Shadow Form is more powerful, but I can't remember if it's usable on x/A anymore.
2. This isn't a question.
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