Cult of the Cadence (followup)

This is a random event where a hero asks to infiltrate a group called the Canon. This is a followup event to Cult of the Cadence that has a 50% chance of occurring 75 to 90 years later if the ruler chooses to do nothing in the first event or to help the cult.

Outcome summary
The "Death Canon" outcome isn't randomly selected, but replaces the randomly selected outcome should its effects not be possible when it triggers. Specifically, this happens when:
 * "Canonnnnnnnnnnnnnn!!!" triggers when there are less than two heroes in the retinue.
 * "Canon Fires" triggers when all regions have been lost to corruption.
 * "Calm Canon" triggers when no remaining regions have any corruption.

The "Tear'em Down!" outcome can only occur if there is a second hero available that is not a Rebel, otherwise, the "Too Many Questions" outcome will be guaranteed from that choice.

Start
The hero for this event will be randomly selected from those who are not Rebels. If there are no such heroes, this event will not trigger.

Infiltrate the Canon
The hero will be gone for a whole number of years between two and four.