Nice! I know it was banned already, and this is my first reply to all forums (i'm new here) so i'm sorry if i'm not supposed to be replying but, i'm aware of urshifu's reason to be banned. Wicked Blow in my opinion is the most broken part, more than Unseen Fist. If you have bulk up on your set and set it up once, even Pokémon that resist a hit (unless they are double-resistant) can potentially get OHKO'd.
+1 252+ Atk Choice Band Urshifu Wicked Blow vs. 252 HP / 0 Def Togekiss on a critical hit: 252-297 (67.3 - 79.4%) -- 37.5% chance to OHKO after Stealth Rock
Just an example of how broken it is.