've heard some rumblings of Mono-Green Aggro decks with the potential to compete against the big boys of Standard, but I was skeptical. After all, there are problematic cards like Supreme Verdict around, but they don't always have it. Even if they do, you can kill them on turn three with a great draw. Barring that, you have Gods, Boon Satyr, and Experiment One to give you some resiliency.
The one question you are probably asking yourself (since I asked myself the same thing) is "Where are the Reverent Hunters?" First of all, three mana is a lot to ask, even for a creature as large as Reverent Hunter. Instead, the deck plays Witchstalker as a great target for Ghor-Clan Rampager and Aspect of Hydra. In a format where nearly every deck has a way to stop you when you're trying to Aspect it out, having access to Witchstalker can be a godsend.
Will this deck continue to thrive in Standard? I'm guessing not, but it will be a deck that pops up from time to time. For example, RW Burn was popular for a few weeks until Mono-Black Devotion adopted Staff of the Death Magus into its arsenal. The format was still soft to lightning-fast aggressive decks, but one that can deal large amounts of repeatable damage is probably better than one that can just barely eke out 20 points.
Green-based aggro might not be good every week, but it's been doing reasonably as of late, so it's worth a further look.
Tarkanmag's RG Aggro
Gerry Thompson is a former professional Magic player and strategy writer, whose career highlights includes a Top 8 at Pro Tour Gatecrash and two Grand Prix wins in Denver and Nashville. He's currently a development intern for Wizards of the Coast.