The Corrupted Crew always takes their turn before you. On their turn, they follow their own sequence of steps, which is summarized on the front of the Solo Phase Aid card.
1 Draw Corrupted House: Reveal the top card of the Corrupted House deck and place it next to the Solo Action cards. The House shown on this card will be the target House this turn.
2 Gain Influence: They gain Influence with the target House. If their Influence marker reaches a reward token, simply discard it. If they would gain Influence when their marker is on Step 8 of a track, then place the revealed Corrupted House card next to the Influence board. It will be added to their total Influence during Final Scoring.
3 Change Assignment: Move the Assignment marker clockwise to the next Solo Action card. The ship type on this card will be the target ship type.
4 Tactics Bonus: If the Assignment marker crosses the Corrupted Tactics tile, advance 1 step with the Corrupted Crew’s Tactics marker. If it reaches a Tactics track space featuring Corrupted Tactics effects (see Corrupted Tactics), resolve them immediately.
5 Board with Crew: The Corrupted Crew will attempt to board a target ship type belonging to the target House, placing their Crew figure on the ship’s Crew space. Send the Harbinger first, if it is still available.
5a If the target ship type is the Revenant, consider it belonging to every target House. When boarding, they prioritize the space marked with “1” on the Revenant Solo Action card over the space marked with “2.”
5b If the Crew space of the target ship is occupied or the ship is not on the main board at all, repeat the Change Assignment and Tactics Bonus steps, then attempt to Board with Crew again. In the rare case this happens four times and the Assignment marker returns to the Action card it occupied at the start of the turn, set aside the Corrupted Crew member instead of placing it.
Note: The following step only applies when placing the Harbinger, not its Followers.
6 Revel in Corruption: When placing the Harbinger on an Arkship, Fighter, or Dropship, place a Corruption on the ship along with them. If the ship already has a Corruption on it, the Corrupted Crew gains 1 Tactics. If their marker enters a Tactics space that features Corrupted Tactics effects (see Corrupted Tactics), resolve them immediately.
7 Resolve Solo Action: They resolve the action printed on the Solo Action card with the Assignment marker. This is a set of effects different from what is printed on the ships (or their summary on the Sequence board). See Solo Actions.