Jund usually consists of straight good-stuff. With this budget rendition, my hope is that I can do fairly well at FNM with little cost.

Creatures

Corpsejack Menace is the main fuel for this deck. When you put it down with an unevolved Experiment One on the board, you now have a 3/3 attacker that can regenerate if need be. Corpsejack will become the main target, however, when Rubblebelt Raiders or Necropolis Regent hit the board.

Fanatic of Xenagos sits comfortably in its spot being an enabler for Experiment One and an immediate threat if tribute is not paid.

Rakdos Cackler is here to destroy. A guarenteed 2/2 attacker and can be an enabler for Experiment One.

Experiment One helps us keep the curve low, while also helping put pressure on the opponent with every other creature, barring Elvish Mystic, having the potential to trigger its evolve ability.

Necropolis Regent is usually a finisher if allowed to resolve and attack. It works well with Corpsejack Menace, the Blood half of Flesh / Blood, and is a bulky body against oncoming attackers. The triple black cost hardly ever gives us problems, however, can be a burden in certain situations.

Reaper of the Wilds is a great card for this deck. Sitting at a 4/5, it allows us to evolve Experiment One multiple times and thus allows more creatures to die and activate it's triggered ability. It's activated abilities are incredibly relevant as well protecting it or making it into a removal spell.

Other Spells

Golgari Charm is one of the most powerful spells against control in this deck. It stops Supreme Verdict and kills Detention Sphere, among other enchantments.

Putrefy provides early game protection against aggro decks and allows us to remove threats later in the game.

Lightning Strike Accomplishes the same task as Putrefy especially against weenies and aggro. It also can serve as a finisher depending on the situation.

Read the Bones is here for great card advantage early and late game.

Flesh / Blood are both excellent. Flesh allows us to potentially remove graveyard threats while beef up a creature. However, it is seldom used compared to the Blood portion. Blood allows us to finish an opponent relatively easily if allowed to resolve.

Sideboard

Archetype of Aggression is a real enabler for this deck. It allows us to pose a much larger threat and turn down their clock. It enables Necropolis Regent to give +1/+1 counters to all of my creatures and makes Reaper of the Wilds a much larger threat.

If our opponent is running heavily on enchantments, we can bring in Destructive Revelry to ease the pressure on us.

If the opponent is not playing black, I sub in Doom Blade for Putrefy to save mana if needed.

Reaper of the Wilds provides excellent pressure and is a considerable threat sitting at a cost of 4. Its two abilities are incredibly relevant against control decks and mid-range decks.

Savage Summoning is useful against counter heavy control decks at the cost of making creatures cost 1 more.

Slaughter Games comes in when the opponent has very few win conditions. It is mainly useful against control, but can be used to pick out threats in other decks.

Varolz, the Scar-Striped comes in against removal heavy decks, or the rare mill decks. Adding more options with your graveyard can prove to be very useful.

Why to play

The deck is cheap

Lots of interaction with creatures

Neat combos

You like to surprise some of your opponents at FNM

Why not to play

If you need to be highly competetive

Don't like to take your chances with mana and playing three colors

Like to play Control

Other OptionsIf you have the R/G temples, throw those in. The draw setup can be highly useful at any point in the game. You may want the R/B temples instead when BNG hits however. Also, shocks would be better fixing if you have them.

I encourage you to play around with the deck. I think it's a lot of fun and would like to hear any feedback.