Ask a Bowman Thread.

I started at Typhons around 80, I think my Arrow Rain was about 18.
I trained there by starting at the center bit with the thorns, then alternating between mobbing everything up and to the left, and up and to the right. Then I go back to the thorns in the center and kill. Kill in center so if you get blown right there's a wall and if you get blown left you don't fall off all the way.

I hear there was autoban glitch at typhons tho, not sure if that was resolved yet.