This deck is not broken. The entire game is broken. INCREASE STARTING LP. 4000 is too little.
Duel Links, like other f2p games, was designed for short matches and short attention spans. That’s why you only have 20 card decks and 4000 life points. That’s why the game rewards you for quantity over quality of PVP wins. That’s why the game gives you an extra 500 points for a quick victory.
Bamboo OTK is just a symptom of way the app is designed.
At this point I think it is valid to raise LP to 8000. 4K was fine when the strongest Lv4 beater was Axe Raider, however now we have to deal with 2 Lava Golem burn, Bamboo, CA, and many other OTKs. Current LP total allows little to no room for interaction or recovery. anymore. It does not feel good to win with these "competitive" decks anymore