DLC updated deck. This is an interesting one as I've taken out the Black and turned it Mono-Green as a test.
The core of the deck is Doubling Season, but it is also complimented heavily by the Paragon of Eternal Wilds. The deck is based around creating lots of tokens with DS, but also doubling counters on permanents such as Young Wolf and Arbor Colossus. The Paragon not only gives +1/+1 to token swarms, but can give these huge Green creatures Trample - an ability that's lacking in D15, and very difficult to deal with effectively.
For example, one DS will also quadruple a Mycoloth's token production as it doubles the counters for Devour, then the creatures produced. With two DS in play, just eating 4 creatures will produce 96 Saprolings the following turn! But even with smaller Devours, DS helps production and growth, while the Paragon exploits it by boosting tokens and giving larger creatures trample, creating a great synergy between the cards.
The only DLC card here is Raised by Wolves, which like the Asp to the Nemesis, is simply a poor man's Spider Spawning. Likewise, Nessian Asp is not great, and I'd probably have prefered Nemesis of Mortals, but mono-Green is weak to fliers, so I need Reach. Though mono-Green, both Spawn and Nemesis are better in Golgari decks, so I substituted them for weaker cards that had greater reliability for me.
Raised by Wolves does have a minor upside here however with Young Wolves. Not great, but is at least reliable enough to give me creatures in situations Spawning sometimes couldn't, which is important. With DS, it also grows a creature to make it another Trample threat with Paragon. The deck has long needed a retool, and while this is the least crucial card in the deck by a decent margin, it was enough to push me over the edge into mono-Green, which I'd been considering for a long time.
Unlike my other DLC updates, this is still subject to a little tweaking and testing as the change it's gone under has been much greater than the others, so may still get a few minor changes. I may even go back to Black. It all depends on how reliable the deck is in comparison.
---
In the Golgari version, it previously contained Spider Spawning and Nemesis of Mortals, however with only Satyr Wayfinder to fuel the graveyard, and cards such as Young Wolf resisting filling it, and Jade Mage producing tokens that can't, they were occasionally dead cards that while could win the game in amazing fashion should they combo, didn't gel at crucial moments a lot of the time. The graveyard subtheme was very powerful, but not consistent enough, so I had to remove it, as it wasn't central to what the deck was trying to do anyway (abuse Doubling Season).
That left me with just Quest for the Gravelord truly justifying Black, which while genuinely a great card in the deck (1 death = 4 x 5/5 Zombies!?), didn't justify a second colour alone. Especially since going mono would give me access to the truly powerful Primal Bellow, which has even better utility in token producing and trampling decks.