Here are two decks that reached legend using only SmartBot. Be careful though, never bot on an account that you can’t afford losing. Running a bot 24/7 always has a higher risk of getting banned.
Deck 1 – Shaman:
Deck 2 – Paladin:
These decks are confirmed to have reached legend. That said, getting legend with a bot is really hard and will require time and changes during your road to legend.