8/23/21 - Update Below
Hi everyone!! I've been having success climbing w/ this deck. There are a few versions out there already, but this one has been working for me so far -- even in this crazy meta. Having said that, the Incanter's nerfs happened yesterday, so the meta could still shift. PLEASE CRAFT AT YOUR OWN RISK!!
I'm kinda sick of The Demon Seed already. I'm not saying it's a counter to that deck, but it does give you a decent chance. You can often out armor their damage long enough to smack them in the face (or use Mecha'thun to win). In most of my games so far, I don't even need Mecha'thun. Currently I'm rank D3.
I'll try to add more info because this deck is a little complex, but it can be very forgiving so you don't need to play flawless.
You don't need Lady Anacondra to play this deck for a few games, but she makes the deck better. A lot of times I don't draw her till the late game and she doesn't make a lot of difference, but sometimes she can just create crazy turns.
I've had great luck against aggro. Ok vs Warlock. I haven't lost to a Pirate Warrior yet - and other similar decks. I play on mobile, so I can't give stats. but I'll try to post an update soon with some card explanations.
Have Fun and Thanks for checking in on this awesome deck.
Ok, so I tried some changes and struggled a little....yeah, this will struggle against a lot of aggro decks. I finally lost to a Pirate Warrior, but I'm still undefeated against Odd Hunter. I'll explain my card choices below.
The main goal of the deck is to play Celestial Alignment and do broken things. Usually I win by sticking a wide board and using Branching Paths to finish them off. Mecha'thun is really a backup plan. If two or three of your 5-draw cards are at the bottom of your deck, Mecha'thun prob won't work unless you have a lot of armor. I did overdraw 8 cards once and still won.
Biology Project - Be careful with this one, since it gives your opponent mana as well. I put in an extra to play Celestial Alignment a turn early. After Celestial Alignment. I try to play these right before I play a the second one to make their mana 0 again.
Lesser Jasper Spellstone - I'm using these for early removal against aggro. Against control, these can help when they're upgraded.
Lunar Eclipse - This card may be unnecessary, but it feels good in the deck.
Ferocious Howl - These feel like the last cards in the deck, but the armor gain and card draw feel great. I tried taking one out, but I put it back.
Spreading Plague - Still running one for now, so wait for a lot of minions before you play it if you can. I may try two again to test. It can simply shut down aggro, but against some decks it's pretty useless.
Celestial Alignment - The main card for the deck. The idea is to play this and survive to the next turn. Then play as many cards as you can on the next turn. Two of them is necessary. The second one is handy to keep your opponent's mana down.
Kun the Forgotten King - This card just feels right. Usually you refresh your mana crystals, but sometimes against aggro you can choose armor.
Ultimate Infestation - The third 5-card draw card.
This deck definitely takes some practice. But if you have the cards, give it a shot. I'm having a blast playing it. I'm still trying to reach legend....I'll try to post another update soon.
8/23/21 - UPDATE
Yeah, these cards probably should have been in the 1st version of the deck. Apparently you can use Poison Seeds to trigger Mecha'thun - plus it clears your board, so you don't need Naturalize. This also means you could try a 2nd Spreading Plague, but I'm still running one for now.
Malygos the Spellweaver replaces Ultimate Infestation. You could replace Overflow instead, or run two Ultimate Infestations and no Overflows. I'm not sure which card is better here. The point is to only run two of these cards because Malygos the Spellweaver will (usually) draw some cards for you. And it won't overdraw your deck.
There is still room for a change or two. I'll probably try Solar Eclipse...maybe take out a 1-mana spell. Good Luck!