On the topic of Vraska, this card is really not worth the troubles. It's a big trap so trade them away to the standard folks that can use him.
http://forums.mtgsalvation.com/attac...1&d=1346817949
Let's analyze.
When the +1 is active, you will never attack him. Why? He is ramping to his ultimate. This means he is trying to get 3 creatures, that you have to remove. Just let him ramp and block it with the creature that would have otherwise died to Vraska.
Also, when are you going to attack into Vraska with his +1 active? with a 2/2? Nah, that's not a good idea.
3/3? Well, I rather just pressure my opponent's life total so Vraska has to spend 3 loyalty to kill my 3/3.
4/4? Well, if the +1 is active, I'm just running par on loyalty (4 damage versus the +1 and -3)
5/5? Well yeah, now we're talking. But do we rather have 5 damage to the dome AND force him to spend his -3 loyalty? Or do you want to just suicide your 5/5 clock against this 5 mana planeswalker.
The problem is that it costs 7 freaking loyalty to ult. A single lightning bolt puts Vraska out of contention because the loyalty drops so hard and you spend so long doing absolutely nothing to ramp it. This isn't Gideon that can force an opponent to attack into Gideon.
This card has really cool abilities but can too easily be ignored. 3 non-evasive, non-hexproof creatures on turn infinite really don't make this card good enough.
The pros? It's in the same colors as Pernicious Deed and some good synergy there. It can deal with Planeswalkers (But hey, Vindicate and Maelstrom Pulse and Dreadbore can too! Doesn't mean you should run it), and it protects itself like a king (or queen)!
What's not to like? Well, there is hardly any board impact except for a slow, 1 time vindicate.