Making a first pass.
I wanted more fixing and a reason to do the Gates matter cards, so we doubled up on Guildgates.
This is why I went to one each on guildmages.
Also removed some of the barely represented guild mechanics.
Azorius, Boros, Selesnya all have 1-2 mechanics already.
Golgari, Gruul, Rakdos I want to try all three mechanics. For Golgari all three are graveyard oriented. Gruul all three assist with making combat go your way. For Rakdos all three mechanics encourage aggressive play.
Dimir had two transmute cards that I didn't think about when building, so those came out.
Izzet had one replicate spell, and the Djinn that gives replicate, out those come to put the focus on the other two mechanics.
Orzhov is fun because I realized Afterlife and Haunt both care about creatures dying, so we're pointing them towards aristocrats, meaning out come the two Extort cards.
Simic had a sigle Graft so I cut it to not cause false expectations there.
I also cut a few other stray spells that I already felt didn't fit in.