Tempoross
A Fishing group boss on Ruins of Unkah. Cook and load fish into cannons to wear it down. You get 3,000-7,000 coins and reward permits on a win.
How it works
Tempoross is a skilling boss. You fish, then fire your catch from the cannons to wear it down.
A win gives 3,000 to 7,000 coins and sets your reward permits for the reward pool. It also counts toward your Fishing training.
No chances listed
The reward pool itself is not a normal drop table, so no chances are listed here.