Speaking of based whale lord (heheh) here is a cool set I tried out:
Wailord @ Leftovers
Ability: Volt Absorb
EVs: 252 HP / 4 Def / 252 SpD
Calm Nature
IVs: 0 Atk
- Wish
- Protect
- Heal Bell/Roar
- Volt Switch
This inherits from Jolteon, the only Pokemon to get Wish, Heal Bell, and a switching move (I think anyway, if not it is still the best to inherit from). It also gives Wailord an immunity to one of its weaknesses with Volt Absorb, and recover HP in the process. With its massive HP stat, Wailord makes a great Wish passers, able to tank hits, heal itself when necessary, then use Wish before tanking a hit and bringing in the Pokemon you want healed safely with a slow Volt Switch. Heal Bell is icing on the cake, allowing you to cure status off of your sweepers for even more team support. Wailord is a great Pokemon, and I was never disappointed when using this set--it always managed to do its job effectively. Another option is Roar if you have a status absorber/PH mon/alternate Heal Beller, that allows you to phaze set up sweepers.