The cadence of this Event is absolutely unclear.
Their wording is very malicious if we read closely. Its NOT a legendary and its NOT a "Heroes Journey" - Its an ancient Journey of Redemption - There is no word officially stating that its a HJ, therefore this event is not bound to cadences they released previously and they did that on purpose. So we dont know when this event comes back - could be 2 months, could be 6 months, could be a year, maybe longer!
That they´re doing this on top of what their´re already doing is unacceptable!
The only way they will give out a cadence for this is by a huge community demand.
