Great!
Would I still have to go through the evaluation process?
Quote from ISBPathfinder »Generally speaking cards that don't show up have an issue on the card in the database and its not flagged as legal in the format you chose. I am working on Confluence right now and hopefully that will fix it moving forward.
EDIT: I am able to find Mana Confluence now after having fixed the card. I don't see anything wrong with Voltaic Key offhand but it might depend on what format you had selected when searching for it. If you have issues still please let me know.
Sorry for the late reply! Been super busy with real life.
Yeah, I have considered most of those cards. I have to start working on evaluating the set for potential includes for all 3 of my primers. I loved the set and there were so many cards for it that ended up in all of my decks. So hopefully I'm able to get it done before Streets of New Capenna releases.
Personally, I don't like effects that exile cards from my graveyard in decks like this one. Especially since it's constantly reanimating things, reusing and recovering things, etc. That's why I didn't even mention it in my list of considered cards.
Woodfall Primus goes infinite with Mazirek and any free sacrifice outlet. Yes, it costs 8 mana, but once you have the mana it's GG. Eradicator Valkyrie is a repeatable mass edict effect on a body so it shouldn't be cut lightly. Garruk Relentless might be the only good slot you suggested since that's what I use Garruk for. However, Garruk does it via a sacrifice effect which triggers Mazirek and anything else that cares about sacrifice effects. He also creates tokens which can be used as sacrifice fodder. So you can sacrifice anything on the board for it. Survival of the Fittest requires the creature card to be in your hand. So you have to be willing to discard an important creature (since all creatures in the deck are important) for a potential combo piece. So it'd be one your judgment to determine whether a synergistic piece like Garruk should be cut for the enchantment.
Unfortunately this deck is already so tight for swaps and Jadar is nowhere good enough to warrant taking out a card for it.