Emet-Selch, Unsundered / Hades, Sorcerer of Eld Storm decks care far more about Hades, Sorcerer of Eld than Emet-Selch, Unsundered
Youll want to add some ways to keep Delina safe when they attack like Whispersilk Cloak or Darksteel Plate
Zethi, Arcane Blademaster If you look on the EDHREC page for Zethi, a lot of the instants listed are already pretty efficient, but I think it makes more sense to add more expensive and impactful instants instead of copying Opt or Curate
Doubling Season doubles the number of counters, so you'll put two lore counters rather than one
Although the card draw works with the tokens it produces it is not good enough at producing for that to be good either unless you are heavily into the business of making saproling tokens already
Even though card templating is very consistent, be aware that that functionally do the same thing can still be structured in different ways