Twilight's Fall – a separate game. Twilight Imperium's expansions, mods and rules topics are not part of it.

Plague

ACTION: Choose 1 planet that is controlled by another player. Roll 1 die for each infantry on that planet. For each result of 6 or greater, destroy 1 of those units.
Action card

ACTION:

Choose 1 planet that is controlled by another player. Roll 1 die for each infantry on that planet. For each result of 6 or greater, destroy 1 of those units.

1in the deck
–chance to draw
Yescomponent action

Source: Base game

ClarificationsSelect rulings confidence level

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tirules.com
  • A planet with zero infantry on it may be targeted by Plague.