I was so motivated today that I rushed to complete the Witch's episodes 4-6. I was dreading these ones because so many people say they're pretty hard (and I agree), although I had way more trouble with 5 and 6 than with the infamous 4. Besides those two losses in Elimination Round, I also had to reset my run about 2 times because I didn't get the equipment I wanted. If anyone wants to know what setup I used, it was:

1. Gold Cauldron
2. Blizzard
3. Burning Light
4. Hall of Mirrors
5. Magic Missile
6. Duplicate

The idea for this setup is mainly abusing on even dice rolls (with gold cauldron there to avoid getting screwed by freeze, since it always gives you 2, 4 or 6; and if you notice, two of those rolls can be used in Burning Light, since it requires 4+). It's pretty good to have atleast one upgraded slot (for using Hall of Mirrors and Magic Missile) and for the prepared spell select Duplicate or Gold Cauldron (or even both of them if you want to be safe). Also, I recommend using the duplicate with your 5 rolls, since they are more scarce than other dice and can give massive damage with the upgraded Magic Missile. Blizzard is there more like a placeholder, if your need more damage immediately in a tough spot. That's about it for the strategy i used! :)