What about Bow of Nylea? Not only adds to the deathtouch theme but also allows pumping up creatures with counters. Also Thornbite Staff might be useful with the deathtouch critters. You run a lot of shamans so that helps

Why aren't you playing the Extraplanar Lens and Snow-Covered Forest Combo?

Chameleon Colossus would work well with your creature triggers.

Adaptive Automaton would give you another snake lord!

Not sure how keen you are on splashing a second color, but the new U/G Commander deck brought us Kaseto, Orochi Archmage which could lead to some interesting, ahem... snake-nanigans.

+1 for team Slytherin

Based on all of the tokens you create in here, surprised not to see a Parallel Lives in here. Definitely worth the slot to create a crap ton of snakes. Then Coat of Arms buffs all of them up to insane levels. +1 for snakes man.

Hundredth upvote! Nice deck

Thank you, everyone, for the 100 upvotes!!!!

Make that 101 my dude.

Updates:

-1 Reliquary Tower. I found I don't often find myself drawing so many cards that reliquary tower is needed.
-1 Tranquil Thicket was replaced with a cycling desert for some synergy with scavenger grounds.
-1 Wildest Dreams is nice for rebuying cards, but that's not really what this deck needs.
-1 Descendants' Path is fine for an extra snake every once in awhile, but doesn't really help the aggro plan. Plus, I found myself wanting some non-creature cards that this puts on the bottom sometimes.
-1 Asceticism is a really, really great effect. However, you have to leave so much mana open to utilize its full effect, and many sweepers in the format ignore regeneration anyways.
-1 Time of Need is a fun card to go tutor up one of the many legends in the deck, but it was just a little too slow in an aggro deck like this.
-1 Shisato, Whispering Hunter. I found myself never really having a big enough board where it would feel ok sacrificing a few snakes. When he does his thing, he's busted, and he'll be moving into my new Xyris deck where he should be much more comfortable.

+1 Scavenger Grounds, +1 Desert of the Indomitable I replaced a couple lands with this small concession to keep graveyard decks honest.
+1 Return of the Wildspeaker Two very relevant modes which are both great in creature-based green decks.
+1 Growing Rites of Itlimoc  ^Flip Cheap cradle which may net a card in the process.
+1 Honored Hydra, +1 Noose Constrictor, +1 Moss Viper. A few ok creatures that all provide a little utility. Some will probably be upgraded to better creatures later on. The slightly higher creature count also allows for Itlimoc to hit more often, thought that is almost negligible.

Patron of the Orochi?

I love Patron of the Orochi, and it used to be in the deck. However, it being 8 mana, doing next to nothing for your creatures on board, and having no synergy with your general, it does not belong in this deck.

Jelatinator

+1 I'm just slither into the comments....

Beast Within - Removal at instant speed

Song of the Dryads - Removal, works well with LD such as Strip Mine which you should add as well

Never underestimate removal

While normally I would agree to not underestimate removal, and I do see situations where those are good, I am reluctant to say that this is what this deck wants. You are very often the aggressor with this deck, looking to overload the board and win by casting a finisher or get alot of value off drawing cards. Developing and protecting your board is usually much more important than controlling somebody else's. You typically win by going wide or going around other player's board-states, so removal isn't as important to get through damage. That being said, there are problem permanents that sometimes need to be dealt with, and beast within is a very good answer in that case. I could see testing it out instead of something like slice in twain. I just wouldn't go overboard packing the deck with 'answers' as it makes getting to a critical mass on board that much harder.

I would cut Rending VInes and Slice in Twain for both of the above personally. Upgrading removal seems easy IMO unless the cantrip aspect is more important than general permanent removal.

Awesome deck!!,

Thinking on Kaldheim, some generic tribal cards you could add to your deck:

Realmwalker could give you card advantage or at least top deck information, Masked Vandal can be used as a removal and counts as a snake, Maskwood Nexus can generate you snakes and transform some of your non snake creatures in snakes, Pyre of Heroes for card advantage / tutoring. I know they aren't true snakes (saw that you prefered not to use some lorwyn changelings to stay on flavor), but they are cool and could smooth your play, specially thanks to their lows mana costs.

Appart from Kaldheim: Kindred Summons can search for you tons of snakes, specially if you generated some snake tokens, and with Maskwood Nexus every creature will be a snake in your library too.

Nothing to add here other than this deck looks sick!

Updates:

-1 Glass Asp, +1 Stonecoil Serpent

Also foiled Garruk Wildspeaker and Okina, Temple to the Grandfathers

Why Hexdrinker is in your Meabyboard ? it seems to me It's a very good creature...

Hexdrinker is indeed very good. The maybeboard is more of an acquire-board. It takes awhile for me to acquire new stuff since this deck is almost all foil, and the ones I get need to be blinged out. That being said....UPDATES!

-1 Emerald Medallion, -1 Explosive Vegetation, -1 Sakiko, Mother of Summer

+1 Hexdrinker, +1 Steely Resolve, +1 Three Visits

Stuff on the cutting floor: Rending Vines, and Slice in Twain. Profet93 above is correct in that the cantrip aspect of these really isn't needed.

Also made some updates to the primer in the description. What a fun time to be a snake aficionado with Kamigawa: Neon Dynasty coming out. There are already some upgrades in planning...maybe even a new deck coming soon!