Thanks to the buff to critical hit chance (even if the overall power of crits are reduced) I'm intensely tempted to use Unfezant for all them crits in NU. I ran a very similar set in BW NU and dear god it was effective. Now, thanks to the fact that Unfezant gets Night Slash as an egg move, Ghosts don't wall it dead either. Couple that with the fact it got 10 base Attack boost, bringing to a rather impressive 115... Stuff gets wrecked. Badly.
Unfezant @ Scope Lens
Ability: Super Luck
Adamant Nature, 242Atk/252Spe/4HP
-Return
-Night Slash
-Quick Attack
-Work Up
Fun stuff. Night Slash is a 100% crit chance which is fun, Return and Quick Attack are 50% chance. With Adamant, you hit a pretty nice Attack stat of 361. With Jolly you miss out on fun little 2HKOs on extremely bulky things (I'll get to calcs in a bit). All that Speed lets you outrun neutral Base 120s. Work Up, I have to say, is rather necessary. I'm not even going to lie, without at least +1 in Attack it's a little disappointing. But when you get that +1, here's some of the fun you can have:
(Before you ask, YES. I am using the Gen 6 calc)
+1 252+ Atk Unfezant Night Slash vs. 252 HP / 252+ Def Eviolite Dusclops on a critical hit: 138-164 (48.5 - 57.7%)
Yeah, that is a high potential 2HKO on one of the bulkiest things you'll come across. What about an Uber? Let's take a look:
+1 252+ Atk Unfezant Night Slash vs. 252 HP / 252+ Def Multiscale Lugia on a critical hit: 104-123 (25 - 29.5%)
+1 252+ Atk Unfezant Night Slash vs. 252 HP / 252+ Def Lugia on a critical hit: 208-246 (50 - 59.1%)
Slightly disappointing I guess, barely missing out on a 2HKO on the mother of bulk itself. Oh, but we have Quick Attack which can take between 20-25% off the big bird after Multiscale is broken... Basically guaranteeing this thing is gone in 3 shots. From Unfezant. With the greatest bulk possible.
By the way, in the Lugia example crit Return hits a hell a lot harder, but because it's not a 100% crit chance I didn't mention it.
Now, let's not talk about Unfezant's ability to beat Rock types... Or its ability to take a hit...