Went to the prerelease today, had a blast. My opponents made some really bad mistakes as well, there's definitely lots of opportunities to mess up in this set.
 
Exhibit 1: I cast 
Taigam's Strike on my 
Sidisi, Undead Vizier (great card by the way) to attack for lethal over two turns, together with a flyer. My opponent is playing Atarka. I assume I'm still at a healthy life total. Basically only Sarkhan's Rage can burn me out. I just 
Reality Shifted his most fearsome attacker last turn. Turns out it's a 
Savage Ventmaw. He attacks, unmorphs because he wants to cast the 
Sarkhan's Rage, realizes it triggers on attacking, so he should have unmorphed then attack. A moment later he realizes the damage from Rage would have been enough had he simply attacked for 2 with the manifested dragon (and the rest of the creatures). Lucky win!
 
Exhibit 2: Opponent is slowly but surely grinding me out with 
Outpost Siege. It's been a back and forth game though, and my removal has emptied the board so far. He attacks with 
Rakshasa Gravecaller, casts another, exploiting the first, then plays 
Dragonlord Kolaghan. He moves to his attack step when I point out he already attacked this turn. Next turn I Sidisi for 
Kolaghan's Command, burn the Dragonlord and return 
Hooded Assassin, play it and kill Kolaghan. Woo! I got to burn Kolaghan with his own command! Opponent admitted he wanted to get some value out of the first Gravecaller before he exploited it. I still lost that game though. Outpost Siege is so brutal  >_>
 
Anyway. Exploit is an awesome ability, Coat with Venom is a really good combat trick, and I want to change my cube around so I can accomodate both Sidisi's!