2:26 That same person was going to use Sword of Mystery on a Pokemon that's 4x resistant to it. Bad battlers are bad.
Edit: Every time I've faced Wobbufet in Ubers, I've just pounded away at it and it usually ends up using Counter/Mirror Coat and getting only 1 kill (possibly 2 with Custap). You should never try to set up on Wobuufet, just hit it with whatever attack your Pokmeon has (or Toxic).
One of the reasons why Wobb is banned is because it practically guarantees a kill every match. If it managed to get a kill, then if it's a good player, then they've done their job with Wobb and eliminated a big threat to their team.
Not saying this is justification for Shandera being banned, I've not tried him out yet so couldn't possibly say, but using the fact that Wobb "getting only 1 kill" is an argument that probably works against what you want.