Challenge Set #4 (Spoilers)

Hello Everyone. There is a new update, and new challenges with it. Thanks to the programers who put together the massive update and new challenges (and card unlock prizes). For more info on challenge mode and these challenges you can check the Wiki http://www.slightlymagic.net/wiki/Chall ... t_unlocked.
Here is what it has listed for Set 4:
"Challenge 4:
Chaos Orb (Violent Umtimatum) - Randomly have a permanent of yours tapped, bounced, or destroyed each turn.
Pit Fighting (???) - Dive into the pit and battle a seasoned pit fighter. Watch out for the scorpions!
Life's a Lich (Phyrexian Negator) - Win the challenge without dying to your own Lich
Cascade (Bituminous Blast) - Every spell opponent plays has cascade
ABC's (Leyline of the Void) - Every card in your deck must start with the same letter.
Challenge Challenge (Helm of Obedience) - You can only use card you have unlocked via challenge mode. You may also use basics and beta duals for lands.
Enchanted (???) - Battle your way through an enchantment-enhanced group of opponents.
The '???' rewards are non-card unlocks. You'll have to discover what they are on your own, but they only impact Challenge Mode."
Based on the post with the update it looks like the ???? are probably new decks used in challenge mode, but I am not sure.
The only one I have tried so far is the Lich one. I used a Dredge deck and got pretty far until I got paired with the burn deck and didn't have a turn one kill. I went Bazar, go. He went bolt you, go which made me sack my 2 Library of Lengs and Bazar. I activated of course. I dredged with my draw and couldn't win. So I passed back and got bolted again. I had to sac my Lich and died.
I will probably focus on unlocking Bituminous Blast next. I guess I just need to play something broken that wins on turn 1 or 2. It doesn't appear that you need to play with only basics and original dual lands in those challenges. At least not for the Lich Challenge.
Here is what it has listed for Set 4:
"Challenge 4:
Chaos Orb (Violent Umtimatum) - Randomly have a permanent of yours tapped, bounced, or destroyed each turn.
Pit Fighting (???) - Dive into the pit and battle a seasoned pit fighter. Watch out for the scorpions!
Life's a Lich (Phyrexian Negator) - Win the challenge without dying to your own Lich
Cascade (Bituminous Blast) - Every spell opponent plays has cascade
ABC's (Leyline of the Void) - Every card in your deck must start with the same letter.
Challenge Challenge (Helm of Obedience) - You can only use card you have unlocked via challenge mode. You may also use basics and beta duals for lands.
Enchanted (???) - Battle your way through an enchantment-enhanced group of opponents.
The '???' rewards are non-card unlocks. You'll have to discover what they are on your own, but they only impact Challenge Mode."
Based on the post with the update it looks like the ???? are probably new decks used in challenge mode, but I am not sure.
The only one I have tried so far is the Lich one. I used a Dredge deck and got pretty far until I got paired with the burn deck and didn't have a turn one kill. I went Bazar, go. He went bolt you, go which made me sack my 2 Library of Lengs and Bazar. I activated of course. I dredged with my draw and couldn't win. So I passed back and got bolted again. I had to sac my Lich and died.
I will probably focus on unlocking Bituminous Blast next. I guess I just need to play something broken that wins on turn 1 or 2. It doesn't appear that you need to play with only basics and original dual lands in those challenges. At least not for the Lich Challenge.