Archmages Charm is extremely pushed, a solid permission spell, a good way to build card advantage for hitting land drops, and a fantastic tool against Deaths Shadow, Wild Nacatl, Goblin Guide, Pyxis of Pandemonium, Champion of the Parish, Aether Vial, Delver of Secrets, Hardened Scales, Amulet of Vigor, Benthic Biomancer, Glistener Elf, Noble Hierarch, Viscera Seer, and sometimes even Hexdrinker (just to mention a few)
Axgard Braggart doesn't really help with either of these goals, or honestly accomplish any goals at all
This meant that best deck in Modern was almost always some sort of unfair deck, with a rotating cast of which was the best based on what hate-cards people were playing in the given week
Because many Pokemon have multiple attack options, you must announce the attack before calculating damage dealt
Wilds of Eldraine launches on September 18
You've got cards to bring your auras and equipment back from the graveyard, and so long as you're cautious with your creatures, you should be able to maintain a threatening position the entire game