>strategies you never used

Just thought of this. Listen.
Okay so like it's for a double battle, right?
You have Blastoise on the left (or the right) and Heliolisk on the right (doesn't work on the left side).

Heliolisk must also have Dry Skin.
Have Heliolisk use Rain dance to increase Blastoise's water power. Also Heliolisk will heal a little bit each turn.

Has Blastoise use Iron Defense a lot and attack with Heliolisk.
Bonus if against big guys because he can use Grass Knot.

When Heliolisk is about to die have Blastoise attack Heliolisk, this will heal him.

Literally unbeatable. Gonna go try this out now.