My take on Meren of Clan Nel Toth. The deck is pretty standard fare for Meren, but was built with more of a budget in mind, but over time has evolved. If you wanted to go even more budget oriented, Cards like Life from the Loam and Ghoulcaller Gisa are hardly necessary additions to the deck, and I've never actually had Sheoldred last an entire round as she tends to get hated off the board after one or two upkeeps.
This deck doesn't really run any combos, but instead runs heavily on synergy and being just plain oppressive in its nature. Areas that I've noticed the deck being particularly strong in is ramp and getting your land drops, card draw, and creature hate. The goal is to grind everyone down and eventually overwhelm the board.
I've noted a few all-stars that people might not think of right away that deserve to be mentioned:
Reassembling Skeleton
This card has done wonders for me in the early game! Between being easily reanimated with its own ability, and working so well with
Skullclamp
this card just puts in work in the early game. In the late game, it's pretty much a dead draw or at best a chump blocker/sac fodder, and getting it back isn't really a priority. It's a great way to get counters from Meren and the ability to bring back an extra creature early on is just a huge value
Krav, the Unredeemed
Seriously, this guy is a BEAST! pay to sac as many creatures as you want for that many +1/+1 counters? Ok, sounds good. Oh wait, and I gain life off of that? Nice! What was that? I also get to draw that many cards?! Seriously, this guy is a monster in a deck like this! Life gain, card draw, and getting a big beefy beater at the cost of one black mana and all the junk creatures you desire? Use those chumps to block attackers, then before damage, sac them to turn an opponent's attack into your advantage! As long as you have other creatures on the board, Krav does so much heavy lifting in this deck.
Perilous Forays
Man, you think on its surface that a 5 drop that you have to pay to activate to ramp just isn't good value, but I'm here to say that its really a wonderful sac outlet. This card has done so much for my board state that I'm reluctant to cut it for almost anything.
Gravecrawler
and
Relentless Dead
For not being a zombie deck, these two cards still somehow always seem to find a way to be useful. Part of it is the self recursion from Gravecrawler and Relentless Dead's ability to go back to your hand, but there are also a surprising number of zombies in this deck, 9 in total. And for those zombies that stay in the graveyard and don't bring themselves back, Relentless Dead can be super useful.
Overseer of the Damned
This card was omitted from several earlier versions of the deck before I finally decided to try it. And man, I wish I had run it more often! Seriously, this card costs more than
Noxious Gearhulk
but does so much more! Just playing it right off the bat gives you a 5/5 flyer and blows up any creature, making it on par with the Gearhulk in my mind, but it also generates a 2/2 zombie token once it hits the battlefield as well, making it a solid piece of removal and enhancement to your board state. But it also gives you a 2/2 zombie token whenever another creature your opponents control dies! That's value on top of value on top of value! And with all the ways to remove creatures that this deck has, you're bound to get lots of tokens to feed to your sac outlets.
Shriekmaw
Now this card should be in every Meren build, and if it isn't, then you're building her wrong. Evoking Shriekmaw is a great way to get control the board early on, and in the early game when you don't have a ton of experience counters, Shriekmaw will bounce back to your hand at every end step while Meren is out, and she'll keep doing it until she's given you 5+ XP counters.
There are some problem areas in the deck, notably going up against decks heavily running black creatures as the removal in this deck tends to exclude those creatures. The issue that I also seem to face rather frequently is that my board never develops beyond a handful of creatures as I tend to sac smaller ones frequently, so if the deck is targeted, it can go down easily.
And lastly, I've been trying to track my latest changes in the comments below, and I ask that if you have any thoughts on the deck to let me know! I always appreciate feedback and enjoy discussing strategies with other people.