Mono-Green Infect is one of the fastest decks in modern, and is able to pull off a turn 2 win using Glistener Elf and Mutagenic Growth. The main point of the deck is to use any means necessary to damage your opponent with poison counters before they can do anything about it.
Turn 1: Forest + Glistener Elf
Turn 2: Forest + Groundswell/
Giant Growth
+ 2x Mutagenic Growth
Game Over!
Apostle's Blessing, Canopy Cover, Blossoming Defense - Very important for getting past spells and creatures. Using these spells combined with other power up cards can allow your creatures to easily damage your opponent.
Mutagenic Growth is the most important power up spell, because you can use it without paying mana.
Giant Growth
and Groundswell are very powerful 1 drops, and can help to power up the creature very quickly.
Predator's Strike
and Rancor are cheap ways to give your creatures trample, which is especially good with Ichorclaw Myr.
Prey's Vengeance
can be used to attack multiple turns in a row, if you want to build up the power of a creature.
Sixth Sense and Infiltration Lens are the best card draw for this deck, I chose Infiltration Lens mainly because it is better card draw, and puts the defender in a bad situation.
One of the biggest problems that can occur with this deck is the creatures getting too easily killed off.
Blight Mamba
ensures that you will be able to play it if you run out of creatures in your hand. Plague Myr is useful for casting more spells and having multiple uses.
Viridian Corrupter
can be very effective against any deck that uses a lot of artifacts, and
Cystbearer
can make your creatures more difficult to destroy.
Nature's Claim is a fantastic sideboard card, especially since it doesn't matter how much life your opponent gains.
The turn 2 win is great for catching someone off guard, but I would suggest going for a safer turn 3 or 4 win by using hexproof and protection cards, which will be much more difficult to defend against.
