Saw a few ideas using a Red/Green Energy Aggro deck. This is a work in progress, but fine tuning things to have fun playing with friends. I don't intend to make this deck tournament worthy, just something fun.
UPDATE: Turn 4 win!
1: Forest
2: Mountain -> Longtusk Cub
2.5: Opponent attacked with his own Longtusk Cub, I blocked and traded.
3: Mountain -> Lathnu Hellion, swing for 4.
3.5: Opponent's board is empty.
4: Forest -> Invigorated Rampage -> Swing for 8 -> Fling. GG!
UPDATE! 1/16/2018: I love this deck SO much! It's not competitive in the least because there's no sideboard and it's designed to win as quickly as possible, without any roadblocks, under perfect conditions. Having used this deck dozens of times since its inception, I've found 3 total ways of winning by turn 4, each of which are just as fun as another.
Unfortunately, the new ban list just came out which hit all energy decks quite heavily. I don't run Rogue Refiner because this isn't a purely energy build designed for the long run, but I did run four copies of Attune with Aether, which now has to be removed :(.
I removed all four copies of Attune with Aether and both copies of Greenbelt Rampager. To account for this deficit, I brought the land base up to 24 (from 22), I added another copy each of Highspire Infusion and Blossoming Defense, and finally added 2 copies of Larger Than Life. I wanted to stay away from Sorceries but I feel like this card will perform excellently even at sorcery speed. I'll come back and update after I've fought a couple more friends.