Haven't played in a while. Nothing else to do but fill Pokedex. Meh.
If only there were some new-fangeled way to use technology that can harness the power of the internet to download more content in a game giving it a longer lifespan. If only. But that's crazy talk.
Serebii reports that Oblivion Wing absorbs 75% of damage dealt. That would be terrifyin' if Yveltal's attack stats were... well, moar terrifying.
Still pretty damn dangerous of a move against frail Pokes without HP investment. And even if it doesn't OHKO (80 BP ain't too frightening), Sucker Punch (which damn-well has more than 80 BP thanks to Dark Aura) can finish the job. Gets Roost too. Lugia's biggest shortcoming is that it can't hit back, so maybe Yveltal might commonly be used as a tank. I've no idea how well it'l perform in Ubers, but if it goes nigh-unused for reasons other than SR, I will be surprised.
Oh, and gem-boosted Acrobatics would hurt for Doubles/Salac sweeper set (lolstormwoulddoit).
EDIT: Also, I just discovered all abilities like Pixilate and Aeriate that change Normal-type moves t' somethin' else boost said type-changed moves' BP by 30%. MGardevoir gets disgustingly potent STAB in Hyper Voice (once Pokemon Bank is up 'n runnin'), and Echoed Voice would be horrifying if it had usable Speed. On a Doubles TR team, it is actually usable since Echoed Voice still increases in power even if it misses/doesn't hit somethin' 'cause'a Protect. MPinsir has the most powerful Flying-type attack in the game via Thrash, and it can also make use'a Quick Attack, weirdly enough...
Meh, I suppose it works vs. fast teams. I still think that 70- speed Pokemon are roughly as common as 100+ speed Pokemon, but I don't know for sure.