At start of Combat - timing

By Hubsi, in Middle-earth Quest

There are a lot of things that might happen at start of combat...

- a hero draws cards for his agility

- a hero must discard a card for the cowardice corruption

- a lot of Sauron cards are to be played at start of combat

- The hero gains corruption from mouth of Sauron

and maybe I forgot some more things.

In which order are they supposed to happen?