User blog comment:Neppudere/Time to lay down the LAW: Legendary Archwitch Guide/@comment-25990415-20150926012625

in the help ingame is written: Encounter Conditions for Legendary Archwitches (1) After defeating an Archwitch There is only a low probability of encountering one.

(2) Bonus area There is a greater chance of encountering one while you advance through an area.

What is meant with Bonus area?

also u shd mention:

(5) Rewards

The participant who deals the most damage to a single Legendary Archwitch will be crowned the "Ace" and have the best odds of earning a reward. *Participants other than the Ace also have a chance of earning a reward  according to the amount of damage they dealt .