The only decent-ish spread moves slowbro gets are (in order from most powerful):
- Surf - Pro: power - Con: hits patner, no utility
- Blizzard - Pro: power, may freeze - Con: inaccurate, 5 base PP
- Icy Wind - Pro: slows opponents for partner - Con: very weak
which is the 'best' for Slowbro on a doubles match
Consider it on this set:
Slowbro @ Slowbronite
Ability: Regenerator
EVs: 252 HP / 6 Def / 252 SpD
Bold Nature
- Calm Mind
- ???
- Psyshock
- Slack Off/Rest