Some notes from the player themselves:

1. Mind Tether was absolutely the most successful and consistent concerning my winrates. It's such a steady fire power that slowly but steadily decreases your opponents health.

2. Shadow Word: Void starting Treasure is a must - I've never even tried another treasure.

3. Sphere of Sapience came in super handy even though I added it without much confidence. I'll probably add it to my all Duels decks that generally run no Weapons.

4. With his performance in this run, Mankrik won his spot in all my future starting decks thanks to small deck size of early duel matches amplifying his power which was quite helpful to compete against those aggro decks. He won me at least 1-2 games at the beginning.

5. Kazakus, Golem Shaper was useless. Next time I will pass that.

6. Serena Bloodfeather was so useful. Recommended.