The Immortal Sun The Immortal Sun has a lot of different value knobs all tied to one card, only one of which is the typical +1/+1 anthem
Spiteful Hexmage Spiteful Hexmage is a 3/2 creature for 1 mana with a downside
If you have counter-moving shenanigans going, three other EDH-legal cards use doom counters, which gives you more control over this and Imminent Doom, Armageddon Clock, and Eye of Doom
Now, all of that being said, there are a few downsides to Pixelborn that will be a pretty big hurdle for a really large audience to ever grow around it
While sending the deck itself to Card Conduit is a good deal for most players, taking that deck and sticking it into a flat rate box full of bulk commons and uncommons is a bad plan because every bulk common, uncommon, and land you send will drag down the value of your order
We've also got the sweetest 'walker of them all, the one that prompted me to write this article in the first place: Nicol Bolas, Dragon-God