I plan on making a Legendary Boss Battle Gym in ORAS if it's possible anyway and or use this for Online Battles or the next VGC Legends net tourney or whatever.
One of the battles will have this Shiny Palkia that I caught in Pearl. Now this was before I knew of the metagame (best Palkia is either Timid or Hasty). And I did this under 30 SRs too, so it was probably dumb luck. Anyway I've made it work I think for its IVs since I based it on the equivalent Mixed Attacker Build for Zekrom and the two are kinda similar anyway.
Lonely w/Lustrious Orb
4 HP / 252 Atk / 148 SpA / 104 Spe
Spacial Rend STAB
Earthquake
Aqua Tail STAB
Stone Edge / Hone Claws / T-Wave
Because it's mixed, I can keep Palkia's trademark Spacial Rend, EQ is general purpose and Aqua Tail because it's STAB and hits quite hard. I'm not sure for the last move, Stone Edge is useful to kill off flying types but the accuracy is iffy, T-Wave is for consistency, and Hone Claws I think can be useful to boost both Spacial Rend and Aqua Tail, accuracy for both and power for the latter. But I've read that hone claws in general isn't that great and does not live up to its billing. I did post this in the general thread but that thread is more of the franchise than the competitive side when compared to this thread. There isn't anything wrong with that but I don't like to beat a dead horse any longer.
Since it's still in gen 4 I can still give it more moves for fun or for other cool builds, stuff like gravity, outrage, and dive.