I would suggest getting your farming up first (plant wood trees and fruit trees when you're a high enough level) and while waiting for your trees to grow kill brutal green dragons in the ancient cavern (unlock fairy rings and build the fairy ring that is down there to have fast access to a bank)

Brutal Green Dragons drop dragon bones + 2 green d'hides every kill which is why they were so heavily botted

Once your farming level is high enough you can start doing herb runs. I recommend doing toadflaxes at 43 since they're cheap and will always make you a profit as long as they don't die

Depending on what you're using and the luck you have on herb runs you could probably make about 750k - 1.1m p/h which is hopefully more than you're making at blue dragons

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