Notes & Combos
Nothing you haven't seen already except that I run only 1 Ecclesia. Why you ask? Most likely because I like Chunjun. I rarely use Chunjun and I like having him in hand more than I like Ecclesia because for a few reasons.
First one obviously he's a "Swordsoul" card. Second one is his effect when he's used as a synchro material. There have been dozens of matches where only that move made me win as it allowed me to banish 2 from the field.
Besides this, on occasions I put an extra Blackout, Shthana and Pot of Desires (I never put one of them, always all 3), but after a long time, this is the list that brought me the most wins.
Runick tips: I don't like using Chaos Hunter because you have to discard to summon it and it also stops you from making your plays. Also if I decide to put in 2 or 3 Cosmic Cyclones, I will always put a 3rd pot of desires along with it. Pure Runick is not that hard, I just don't play until I have my outs (Tenyis + Duster) in case opponent doesn't summon Hugin preemptively, or if they summon anything else besides Hugin, I just pass until I have storm.
Happy grinding!