Sometimes a specific deck just doesn't change much with the passing of months and years.
#(12-3-23) Which of your decks has gone the longest without any substantial/major upgrade, and why?
leaden lynx
molten jacinth
My Roon deck has only had 3 cards added to it in the last 8 years
Since I build Sisay 5 years ago she's only had 2 real upgrades for tech, the rest has just been changing out art.
violet sierra
Razia damage redirection. it's not an effect that gets made much, especially recently because it's a bit annoying in Limited. funnily enough, LCI gave be two cards and they're the most cards I've added all at once. before them, the last change was Crimson Vow
dawn needle
Counting only decks that I keep upgrading:
Illuminor Szeras hasn't seen a card swap since February. It's a big stompy monoblack artifact list that cheats out big things. I have some ideas of things to swap in but. In general that list is one of my hardest to want to upgrade because it's a silly deck to do silly things.
leaden lynx
My Wort list has only gotten 2 major new cards in the last year -- Spelunking and the newest Nissa. I'm not exactly sure why this has been the case, since in theory its primary focus (landfall and ramp) is evergreen.
My Hapatra list has also received very few new cards recently, but that's largely because they don't print -1 counter tech anymore, and they're hesistant to make cEDH-playable stax pieces 😦
undone tapir
I have a [[Phenax, God of Deception]] deck and I don't think it's had an update since 2020 with [[Charix]]. (at least if I'm remembering it right and Jumpstart came out before ZNR)
ember lilyBOT
Legendary Enchantment Creature — God
Indestructible
As long as your devotion to blue and black is less than seven, Phenax isn't a creature.
Creatures you control have "
: Target player mills X cards, where X is this creature's toughness."
4/7
Legendary Creature — Leviathan Crab
Spells your opponents cast that target Charix, the Raging Isle cost 
more to cast.
: Charix gets +X/-X until end of turn, where X is the number of Islands you control.
Zendikar's seas are deeper than anyone can fathom.
0/17
midnight pelican
Myrel. I’ve mostly been neglecting that deck, but I do hope to get some nice upgrades for it once I get the rest of what I need for Brenard and Slimefoot and Squee.
civic torrent
Sen Triplets I Have No Wincons Can I Borrow Yours.
Its just something that rarely has new cards it really wants printed, and usually when there is something it wants I can't actually be asked to remember to do so right away and then forget to do so because it so rarely gets played.
earnest thorn
My heads I win deck it came as a good deck and I haven't seen any new coin flip cards that it has to have
vivid lily
I haven't updated my prossh deck for a while. I nearly never play it because it goes comboing fairly easily and my playgroup don't like this deck. So it's always in the last place for updates and I don't take time to update it even if I keep a list of cards I would put in it.
light sundial
I have a bunch of decks that haven't changed in any meaningful way in years, I'm happy with how they are and the level they perform at