>>20383111Yes. Outside of a few extreme cases of some suicide leads, you always want to have max HP, Def, and SpDef. Speed is maxed unless you're running Trick Room (at which point you want 0 Speed IV).
Then, you choose between Attack and Special Attack.
You are correct in assuming that the standard IV spread is 31/X/31/31/31/31.
A few mons are dedicated mixed attackers, and want 31 in both attacks. Then, you can either settle with a non-low, non-perfect IV in one of the defenses, or go for the hexaperfect.
>>20383836Also, if you Wonder Trade, you rack up Pokemiles. You can then connect an account on the 3DS PokeGTS official site with your 3DS game account, and trade your Pokemiles for Heart Scales (and PP Ups and Rare Candies).
>>20383842Mystical Fire/Will-o-wisp/Toxic/Safeguard
None of these moves rely on your low stats to be effective, while offering tangibly useful support to itself and the rest of your team.
>>20384010Anon wanted Braxien, not Delphox.
>>20383845Also, base stats are the stats of a mon at lvl 50 with 0 IVs, neutral nature, and 0 EVs. That's the basic definition, though yes you can datamine it/calc with formula.