Firefly Praxis 10 21 17

This is a Praxis deck that has a heavy focus on Flying, Charge, and Fire influence cards. It eschews typical mainstays such as Sandstorm Titan and Heart of the Vault in favor of Crimson Firemaw and Soulfire Drake. It also makes use of a few creatures not commonly seen in other decks, including Diogo, Groundbreaker, and Kaleb.

This deck was designed largely around the prevalence of Tavrod decks being able to shut down and out value Praxis Midrange. Flying gives this deck an out against board stalls, which means it also has game against Chalice decks.

This deck is very light on removal. The goal is to get flyers in the air and attacking, not to interact with your opponents creatures. Sandstorm Titan is a tremendous obstacle for the deck, and so has benefited from Tavrod devaluing that card.

Heavy lifters:

Soulfire Drake is MVP here, and its entomb effect synergizes well with the rest of the deck.
Crimson Firemaw is a great card that's even better with Soulfire Drake's entomb.
Diogo Málaga and Groundbreaker are solid ground blockers that also attack well when the ground is clear, or when their given flying from Soulfire Drake's entomb. Don't rely on Diogo's ultimate.
Archive Curator is silence on a body.
Shatterglass Mage is artifact removal on a body.
Kaleb will save the day. You'll occasionally find yourself in a bad situation, but then Kaleb will show up with his pickup truck full of guns and swords and then suddenly everything is alright again. Kaleb is a friend.

All the above creatures also benefit from Ageless Mentor.

Other creatures in the deck are there to serve a function and then jump in front of an attacker.