Here's a quick draft of a Feln midrange - nightfall deck.
I'll add win / loss tracking shortly.
There are 17 forms of nightfall trigger. I'm not sure if this number is too high or not, more play testing will tell. Our goal is to control the early game with removal and win midrange... as the archetype suggests. I'll expand on this section as I play more games.
Also I would like to ask:
after the nerf Vara, Fate-Touched I feel like it's not so strong any more. Each time I used her she was killed immediately after the summon so no creature was reanimated and wait until turn 10 to play her with Miris Nightshade or rely on having an unseen to bond Zelia, the Vain feels like win more. Have you considered replacement? I was thinking about Shadowlands Tyrant, Touch of the Umbren, Venomspine Hydra or Nightmaw, Sight Unseen. Don't have these cards to try it unfortunately