Mix, Mingle, and Meddle (57891) requires An Invitation to Treachery (57888) and it seems to require "Accidental" Arson (57889) & Beautiful, But Deadly (57890)
Enacting Immediate Justice (57892) requires Mix, Mingle, and Meddle (57891)
Neither Enemy nor Ally (57893) requires Enacting Immediate Justice (57892)
Maldraxxus:
Revendreth:
Torghast:
The Maw:
Bastion: