The Drunken Lizard Pub

I've made it to the astral range, but I can't seem to get to the area where the tree is. (it's blocked by the black mountain rocks) Is there a way around them? Or am I missing something?

Where do I get this editor? And does it run on a mac?

Where might I find this spell? And is this the only option to stop the shopkeeper from fighting me?

I know in book II there is a charm potion, but is there an equivalent in book I?
I need to turn in a quest, but the shopkeeper keeps fighting me.
Also, my last save before the shopkeeper was mad was from quite a while ago, so that isn't an option.

I've tried many of the suggestions of so called "similar" games such as: Baldurs Gate any of the Spiderweb games (Avadon) Diablo I hate the use of the party system as well as the massive maps I like how condensed everything is, and how I can fully explore everything in Eschalon. While I ea...