Spell Item Upgrades & Fixes

Autocombination multiple item loss has been fixed.

Joguer now sells empty bottles, blank scrolls, and uncharged wands.
These items can be used to split stacked spell items in half.

Joguer also sells Mirth and Melancholy scrolls that work exactly as you
might think.

Finally, all scrolls now have a stamp that reflects their spell school.
(there were 9 hidden unused scroll graphics)