Wisp encounter improvement

I think Wisps will become incredibly fun if: when you touch it, it just turns into a Wisp-touched rare mob without running around. This way you can just give multiple more wisps to each campaign map and improve loot (after 0.2.0g).

Also I'm glad you put more strongboxes around the campaign now, got some decent currencies out of them.

People are talking a lot about the endgame, but I think the campaign needs many more "league-lite" mechanics to be more fun.