Any player, including a battle's controller, can attack the battle as long as the protector of that battle is a defending player
Besides all sixteen new cards I've talked about (you get one of each except five of Underdome), the set includes 70 reprints from Unglued , Unhinged , and Unstable , most of which have never been reprinted before, ten full-art lands (two cycles worthone foil and one non-foil), and 60 standard-frame basic lands with all-new art (twelve of each basic land type)
The so called "foil loophole" is especially interesting and might be the easiest way to solve our current Reserved Listdriven price problem
Yes, rarity matters, but a card's financial value is driven by two things: collectability and playability
Its a shoo-in for decks like Oloro and Ayli and Karlov, all of which happen to be insanely popular EDH generals right now