Early use Lone Druid, get bottle, summon bear and use bear take bounty rune. Then just let the bear die, and summon the bear again to keep using the rune. EZ infinite gold bug.
And some cheating one-shot cheat that some russian is using. Dont know the detail to that one. Fix the ♥♥♥♥♥♥♥ rune keeper bug with summons that can carry items, like the summon spirit item that need necronomicons to make. Same bug with that one too.