As if Pokemon EV spreads couldn't get even dumber in the game where everything is dropping speed like its alternator fell out, we have a wild situation going on with Yveltal.
From my current understanding, the damage formula got a pillow thrown at it with a damage reduction multiplier. Outside of that, as far as I'm aware, we're still dealing with the same 15 year old formula we've come to know and low roll.
We've assembled a perfect storm of stupid:
- Yveltal is one of the handful of Pokemon out there with HP higher than its defenses, so boosting HP isn't the automatic best mixed bulk investment.
- Yveltal really really likes its draining move oblivion wing
- Speed is seemingly a very minor contributing factor to Pokemon success this stage of play in the metagame (like the actual definition of metagame) and you have little reason to invest in it.
Because of all these, if you are using a solely special attacking Yveltal, I would seriously consider not EVing your Yveltal with 252 HP / 252 SpA /4 Blah for this next season. No, you actually get similar bulk with way better oblivion wings with the dreaded, fabled, noob-standard of
128 Def / 252 SpA / 128 SpD! (edit: forgot level 50 stats. Make sure one's 132 and the other's 124)
Plug both spreads into a damage calc and you can see why. They take comparable damage percentage wise, the slightest bit 1% more bulk on the HP one, but the amount drained with Oblivion Wing is massive. Since you have lower HP and you're just taking chunks of your opponent's raw HP value (NOT a percentage), you are gaining back a larger percent of your total HP with your dinky EV spread. It's kind of like how Leech Seed Pokemon have occasionally dropped their HP IV to 0 over the years to get bigger percentages of their HP back for easier substitutes.
So hey, if you're planning on Yveltaling next season and want to oblivion wing a bunch, make sure your spread is, uhh, optimal?