With 35 creatures in total, it's heavy on aggression, but many of these creatures have devastating abilities or near-broken utility for their cost (looking at you, Flamebraider), so there's a nuance to the deck, too
Splinter's Technique upgrades from Diabolic Tutor to Demonic Tutor if we can sneak it, making it a great way to find Kitsune's Technique or Riverchurn Monument if we don't draw them naturally
Creatures (16) Planeswalkers (8) Lands (25) Spells (11) While Archangel Avacyn has enjoyed relatively little success in powered formats, her sheer dominance during her entire Standard duration combined with just how many other Standard formats would be warped by her earn her spot on the list (and thats to say nothing of how complicated of a card she is, making her one of the most difficult to play optimally against)
The other nice thing about Atraxa is that she lets you run every color in Magic except red, giving you more choices when it comes to building your deck
Most, if not all, of the main set contents have already been revealed