pretty standard Landfall type deck, doing Landfall type things.
The deck works on the principle of getting out low mana ->early damage creatures like Fearless Fledgling and Brushfire Elemental who, if left unchecked can bring an opponent to under 10 life real quick. This will help thin out the opponents hand of burn or removal spells while you wait for the big shows. Also, Frost Bite for quick early game control.
Running 3 colors in standard, I am bringing in Lotus Cobra for some mana fixing and moderate ramp.
In early to mid-game, you can bring out Fearless Fledgling and Scute Swarm, one gets permanent +1/+1 counters, while the other can start flooding the field with insects.
Mid-game- Felidar Retreat and Scute Swarm. Felidar Retreat is a very versatile enchantment, with token generation or boosting all of your creatures.
For additional mana fixing and double landfall triggering, we have Evolving Wilds, Druid Class, and Roiling Regrowth
These spells alone are enough to be game enders when the come together right, but when you manage to get out the the 1-spell armies that are Phylath, World Sculptor and Ancient Greenwarden. You will have people conceding faster than the French.
Ancient Greenwarden + Druid Class + Evolving Wilds
is just as disgusting. Using Ancient Greenwarden to pull an Evolving Wilds from the graveyard only to sac it again to pull a land from your deck, that's 2 landfall. Add Druid Class to allow for an additional land to be played each turn, pulling Evolving Wilds from the graveyard AGAIN, just to sac and and get another land. Keep count that's 4 land...plus Ancient Greenwarden doubling all landfall triggers, you have 8 landfall triggers (assuming you are not also going to play some land fetching spells like Roiling Regrowth just to be rude haha). This combo can populate every turn now. This is what that means.
1 Scute Swarm is out there (assume 6 land out)- at the end of the turn, if I am doing my math right, you'll have a total of 81 Scute Swarm! Also, if you just so happen to have Felidar Retreat on the field, the +1/+1 counters I believe would result in the this final army of Scute Swarm
3 at 9/9
6 at 7/7
18 at 5/5
54 at 3/3
The rest is up to you...This is your land, use it how you see fit ;)