Why is it that not many people run {Vraska the Unseen} as far as threat control I don't see much better
For 5 mana, by the time you cast her the game is well under way.
Also a lot of people feel that the 5 drop spot is already quite full with thing like thragtusk etc.
As for being a threat, she really doesn't do too much. They either just don't attack her when you use her +1 ability. She gets weaker when you use her -3 so they can probably take her out with 1 hit.
Very rarely you ultimate a planeswalker, and hers seems a bit of a win more ability. I mean if they can't stop / deal with 3 1/1's by turn 8(?) and you haven't already won then something is wrong.
She's ok. Id probably only run her in some kind of control solely for her -3. If you can cover her, you've got a {Vindicate} on a stick essentially. However, delving past standard, just slap her and {Liliana of the Veil} together in a nice, albeit expensive, bundle named {Karn Liberated}.
She's mediocre and a tad mana intensive. Her -3 seeming to be the only "good" ability.
Ah, makes since