Official rule text
25.3 While a player controls a planet, that planet’s card remains in their play area until they lose control of that planet. 27.3 When a player removes the custodians token from Mecatol Rex, they take the token from the game board and place it in
View official source
Source: Twilight Imperium: Fourth Edition - Living Rules Reference: Prophecy of Kings
Expansion: Prophecy of Kings
Version: 2.0
Reference: Rule 25.3