1.On it's own its nothing more than a retreat caddy.
2. Mewperior, Gyarados, or any Stage-2 decks that can get sped up.
3. Rhyperior Lv. X with Delcatty, Garchomp Lv. X MD and Gyarados, Machamp SF, Kingra Prime and not, Gengar Prime, the list goes on.
4. It has low HP, but being a Basic...