All of them are just one type, and all have flash and will counter spells when they arrive to the battlefield
Milling five or six cards at a time isnt as efficient as dealing damage at the same pace, but its a great way to build a mill commander that doesnt rely on Bruvac the Grandiloquent to chew through your opponents libraries at a reasonable rate
Some rebacked cards are made when the back of the card was considered marked or unplayable, and someone put the front on a new back to allow the card to be "playable" again
As mentioned before, Zur is a well known powerhouse in Commander playgroups, having a very strong presence in Commander games
(See, we make the Star Wars Trading Card Game so we get little perks like a company showing of Revenge of the Sith before the release date.) I look at my watch
Like Abe's Deck of Happiness and Joy, my signature multiplayer deck with a few thousand cards, this card is wonderful, since its huge defense makes it, usually, better than a Cho-Manno, Revolutionary since it's hard to crack 10 toughness and it sucks up all of the damage from a 8/8 trampler like an Aggressive Mammoth or a Terra Stomper