Nogi, Draco-Zealot is best at the helm of a dragon deck, but there are just better choices for mono-red commanders for dragons (see Zirilan of the Claw)
If multiple players have Auras to put onto the battlefield, the player whose turn it is announces what their Auras will enchant, then each other player in turn order does the same, then all enchantments (both Auras and non-Auras) enter at the same time
Every card in this deck is individually mediocre
Magic is only going to add cards after all, and Ive always been happy to see something useful in my boxes Ive forgotten I own
This is an ability most likely to see play in formats where you can make your creatures unblockable and protect them, which means its big for Commander, but probably wont see much use elsewhere
however, sellers are clearly capitalizing on the market