Proxy cards are generally acceptable for personal use and casual play, but they are not allowed in official tournaments or sanctioned events
For four Energy, Torterra can smack your opponent for 150 damage
"Spright", synergizing with the "Twins"' Level/Link 2 status, and "Spright Red" and "Spright Carrot" providing a way to put an "EvilTwin" into the Graveyard for the other to revive
However, since theres no guarantee of which cards you will draw, you might prefer cards like Professor Oak, which lets you draw more, or Computer Search, which allows you to find a specific card
Youll more than likely want this card for its effect where you can discard it to the Graveyard to Target a Dragon or Machine monster, and take control of it until the End Phase