Official rule text
1.20 If there are multiple abilities that players wish to resolve at takes precedence over a one-time ability and an enabling the same time during the strategy or agenda phases, players ability takes precedence over a cancel ability. take turns resolving abilities starting with the speaker and
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Source: Twilight Imperium: Fourth Edition - Living Rules Reference: Prophecy of Kings
Expansion: Prophecy of Kings
Version: 2.0
Reference: Rule 1.20