What is the best synergy strategy?

"What is the best strategy for Pokémon"

The is no answer for that...Is like..."Which is the best team". You can build a team with any strategy and it will always have a counter.

Like Fake Out Strategy, if your opponent send a Ghost, say bye bye to your strategy.

 

I love putting Storm Drain Gastrodon with Tail Glow Manaphy. The special attack on the field just blows through the roof. Any two Pokémon with surf/storm drain is amazing to me.

 

Because I like you, Lake Valor, I'll share this with you.

Tentacruel @ Black Sludge
Ability: Rain Dish
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
- Rain Dance
- Aqua Ring
- Surf
- Giga Drain

Cradily @ Leftovers
Ability: Storm Drain
EVs: 8 Def / 248 SpA / 252 Spe
Timid Nature
- Rock Polish
- Ancient Power
- Giga Drain
- Recover

The idea is for Cradily to boost its Speed via Rock Polish while Tentacruel sets up Rain. Then, as Tentacruel uses Surf, it hits ALL enemies plus activates Storm Drain for Cradily. So you're basically attacking and boosting at the same time. I use Ancient Power over other moves because it's STAB, and there's a chance to get even more boosts. Also, Tentacruel's EV spread is purely for survival.

I have more that I can share, but I'm just going to post this one for now.

 

I gotta say GoodStuff is the best team archetype in doubles.
1) It beats all the "OMG TURN 1 YOU USE THIS AND THIS, AND THEN ON TURN 2 YOU USE THAT AND THAT AND THEN ON TURN 3 YOU SWITCH THIS GUY FOR THIS OTHER GUY AND PROTECT AND THEN ON TURN 4 YOU HAVE A +6 +6 +6 PIKACHU OMG" basically all the strategies that take more than 2 turns to set up(aka the bad strats)
2) Since it doesn't rely on set up you can just try to ruin your opponents set up.
3) No need for set up mons give you more space in your team to deal with common set up mons.
4) Just look at teams that have succeded in VGCs as of late(last 3 years or so) a solid 60% were good stuffs and a whopping 85% were GoodStuff + Set Up Cores( general good stuffs with the possibility to use something like Trick Room vs fast match ups such as Sand Offense)