Дюна: Эказ и Моритани

During the Mentat Pause, Moritani may place a face-down token in an eligible stronghold without one, or move one to such a stronghold; it is revealed when another faction enters that stronghold by moving or shipping in, including with advisors. It does not trigger for Moritani’s ally, Face Dancer forces, or placement of a No-Field token; Moritani cannot place one on a Homeworld (pp. 5, 14, 16).

Yes. When both are in a battle against another faction, after battle order is determined, the alliance chooses which of them represents it and uses that faction’s leader and Treachery Cards; the ally’s forces are dialed, with half of the other ally’s forces there (rounded up) added to the dial (p. 8).

At the end of Revival, Ecaz may place tokens in strongholds not in storm that have no Ambassador. The first costs 1 spice, and each additional token placed that turn costs 1 more than the previous one; when a qualifying faction enters, Ecaz may trigger the token’s effect (p. 7).

Ecaz can gain him through its Ecaz Ambassador and keeps him until he is used in a battle or Moritani takes him. Moritani gains him at the end of Shipping and Movement if it was in at least two stronghold battles that turn (not counting battles with Ecaz), and keeps him for one battle (pp. 6–7, 9).

No: it applies only when Moritani loses a battle against an opposing leader who was not killed, and no Traitor was called. Moritani then may reveal a Traitor Card for that faction, but not for the leader it opposed; the advantage can be used only once against each faction (p. 6).