My team:

Venusaur (Final, Grass/Poison type)
Squirtle (Basic, Water type)
Spearow (Basic, Normal/Flying type)

The battle! Round One!

Pidgeotto (Middle, Normal/Flying type) vs Venusaur (Final, Grass/Poison type)
Pidgeotto is super effective. Draw.

Round Two!

Sandshrew (Basic, Ground type) vs Squirtle (Basic, Water type)
Squirtle is super effective. Squirtle wins.

Round Three!

Metapod (Middle, Bug type) vs Spearow (Basic, Normal/Flying type)
Spearow is super effective. Draw.

Final outcome: I win!