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

Intelligence Unshackled

Bastion Paradigm

When one of your units is destroyed: You may purge this card to designate that unit as the catalyst; roll 1 die for each other player's unit in the system. For each result equal to or greater than the catalyst's combat value, destroy that unit.
Last Bastion originParadigm

When one of your units is destroyed:

You may purge this card to designate that unit as the catalyst; roll 1 die for each other player's unit in the system. For each result equal to or greater than the catalyst's combat value, destroy that unit.

1in the deck
–chance to draw

Source: Twilight's Fall