Card I missed from the big update

Copied my normal cube and cut any card newer than RNA.

Spirited Companion -> Ainok Bond-Kin
Cutting Spirited Companion because I'm adding another ETB draw a card creature in this update and I don't think white needs more of this effect. Spirited companion was good in aristocrats and blink however the more expensive variants were better overall. I've been wanting to add Ainok Bond-Kin for a while. If you outlast it once, a 3/2 first strike is a pretty good creature. It makes any other +1/+1 counter card better. I'm not fully adding support for a counters deck at this time, however Ainok Bond-Kin would help if I do.

Cloudshift -> Pegasus Guardian
Unless you have one of the more impactful blink targets like Maul Splicer or Mulldrifter, Cloudshift has underpreformed. Rescue the Foal costs an extra mana over Cloudshift, but adventure gives it some good upside. It essentially draws you a creature you can play later.

Argivian Phalanx -> Salt Road Packbeast
Loses vigilance and a point of toughness, but drawing a card on ETB makes it way better most of the time.

Cyclops Electromancer -> Molten Monstrosity
Cyclops Electromancer has been decent, I just want to try out Molten Monstrosity. If you have anything bigger than 3 power it's a great rate. Big tramplers are generally good in this cube.

Voracious Varmint -> Undergrowth Leopard
Functionally identical. I just like the cat more.

Adding cards from Duskmourn, Foundations, Aetherdrift, and Tarkir: Dragonstorm. Removing planesalkers as they really slow the game down or snowball if not dealt with.

Without madness or many graveyard synergies, discarding cards is a significant cost. Jade Avenger buffs itself without having to discard. It blocks as a 4/4 and is difficult to block in the early game.

In addition to a few swaps I'm cutting 5 colorless cards and adding one card in each color. At common colorless options are sparse. The cards I'm cutting were not getting played very often. I'm hoping the monocolor cards will be better even if they're a bit more restrictive.

Return Triumphant -> Fencing Ace
Return Triumphant has not impressed me. It requires a creature in the yard, doesn't cheat on mana, and is pretty low impact. I'm replacing it with a 2 drop that you can always play rather than conditionally play. I'm excited about Fencing Ace. It will be the only creature in the cube with double strike. It's a great target for buffs.

Aether Poisoner -> Basilica Screecher
Extort has impressed me on Kingpin's Pet and Syndic of Tithes so I'm adding a third card with extort. There are two other 2 drops in black with deathtouch that I like more than Aether Poisoner. I'm also adding Dunland Crebain in this update which also acts as sac fodder.

Bloodthrone Vampire -> Legion Vanguard
Legion Vanguard unfortunately does cost mana to activate, however it starts out as a 2/2 and any buffs it gets from exploring are permanent. Bloodthrone Vampire has been unplayable outside of a dedicated aristocrats deck. I'm hoping Legion Vanguard will be playable in more decks.

Mortician Beetle -> Okiba Reckoner Raid
Mortician Beetle has also been unplayable outside of aristocrats. It only gets buffed when creatures get sacrificed. Unlike Voracious Vermin which doesn't care how they die, or Gixian Infiltrator which lets your sac lands buff it too. Okiba Reckoner Raid is an efficiently statted 1 drop, however it can't attack immediately. Draining your opponent for 2 mostly makes up for that, and might even be better in a board stall.

Witty Roastmaster -> Molten Gatekeeper
More resilient stats and unearth to bring it back for a final hurrah. I might decide that I want two copies of this effect and bring back Witty Roastmaster over something else in a future update.

Fervent Cathar -> Wojek Bodyguard
A card I loved from GRN limited. Makes your other attackers bigger. Works really well with creatures that want to be buffed like Aether Chaser or Healer's Hawk. Fervent Cathar's ETB is a one time use only and a 2/1 is easy to kill.

Basking Rootwalla -> Voracious Varmint
There's isn't enough self discard to make madness worth much in this cube. I've tried to support it in the past, but there's just not enough cards at common. Basking Rootwalla is fine as a one drop but nothing exciting. I'm taking out Qasali Pridemage in this update and Voracious Varmint fills a similar role. No exalted unfortunately, but being mono-green means it can go into more decks.

Qasali Pridemage -> Travel Preparations
When the disenchant mode of Qasali Pridemage doesn't come up, it hasn't felt worth its gold slot. Travel Preparations works with cards that like being buffed like Fencing Ace, Healer's Hawk, and Silhana Ledgewalker. It also adds support for a +1/+1 counter strategy if I want to add that in a future update.

Cogwork Librarian
I've been drafting with 4 or less people a lot with this cube. Drafting with so few people requres alternate drafting formats in which Cogwork Librarian doesn't work. I like the card in theory, but it's been more of a liability than a boon.

Slash Panther
Slash Panther was just a filler creature. It's fine in an aggressive deck, but most other 4 drops are probably better than it.

Eldrazi Devastator
I like Ulamog's Crusher, Maelstrom Colossus, and Thundersteel Colossus more and I don't think I need a 4th colorless fattie.

Mutagenic Growth
This was mostly played in green decks even though it could be played in any. A decent but not great combat trick wasn't worth commiting to always paying 2 life and a card for.

Sylvok Lifestaff
Sylvok Lifestaff is only really good against aggro and I want to encourage aggro so I'm cutting this.

Guardian Idol and Prismatic Lens
2 mana rocks have been good in my Traditional Cube so I expected them to be good here too. It's turned out that creatures matter a lot more in pauper and these don't contribute to the board. There are also very few combos in this cube to accelerate to. I am keeping Mind Stone and Everflowing Chalice because some decks might be interested, but I'm cutting the worst two.

Ride's End
The best version of this effect. 2 mana to exile a tapped creature or 5 mana to exile anything. I wanted another removal spell in white and I'll start with this one.

Unable to Scream
Aura based removal is weak to an number of things, especially blink effects, so I'm wary when adding it. 1 mana to remove a threat is worth looking at anyway. Unable to Scream turns a creature into a 0/2 and removes all its abilitis. Unless it had +1/+1 counters on it, all it's good for is a chump block.

Dunland Crebain
I've been wanting to add another 3 drop in black. Dunland Crebain gives you a flyer, 2 different bodies to sac, a good card to blink.

Cyclops Electromancer
Red currently has no 5 drop creatures. I'm trying out Cyclops Electromancer. In a deck with instants and sorceries, it's comparable to Flametongue Kavu.

Penumbra Spider
Adding the spider back. I have arachnophobia and generally don't play with spiders at all. The art on Penubra Spider doesn't bother me very much compared to most other spiders in magic. I won't be using a typical spider token for instance. Gameplay wise, Penumbra Spider is a very good 4 drop. It's hard to kill and blocks flyers.

Bronze Walrus
It's mana ramp and color fixing, it fixes your draws with scry 2, it's also a creature for the sake of attacking and blocking. It does everything, but nothing very well.

Evolving Wilds
Adding another fixing land. I want to add more mana fixing to this cube, however it always being tapped is a major downside. Evolving Wilds is worse than other cards in the cube however it's still worth playing in any deck. I'm choosing a sac land over a land like Uncharted Haven because I dislike the memory issues of those lands.

Combat Professor -> Aerie Auxiliary
Combat Professor gives vigilance and can change who gets buffed, however if the professor dies the buffs go with it. Aerie Auxiliary requires you to have 2 other creatures already in play to get full value, however it has better stats and gives counters rather than temporary buffs. It's also a target for blink effects if you want to distribute counters.

Lava Coil -> Fanged Flames
Basically the same card, however devoid lets it ignore protection and damage prevention. The main card this applies to is Guardian of the Guildpact but also includes Prismatic Strands and Apostle's Blessing.

Bite Down -> Run Over
A very small change. If you happen to have one of the 3 vehicles in the cube, Run Over is cheaper if you target it.

Not much from Aetherdrift. I considered Hazard of the Dunes however I recently swapped 2 of my green 4 drops and I want to test them first.

It's been a long time since I updated this cube. I've been busy with life and prioritizing other cubes. LCI and BIG in particular had a lot of cards for this cube. I'm also surprised this cube is still 360 cards. I may upsize to 450 soon, but I wanted to make swaps first.

Essence Flux being downshifted is the first 1 mana blink in blue at common. There are only 5 spirits in the cube at the moment, but I hope my drafters won't get too distracted by that. I'm replacing Planar Incision because 1 mana vs 2 is a big deal.

The only other card from INR I was considering was Village Messenger but I like my current red 1 drops more.