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

Classified Weapons

Before 1 or more of your units would make a roll for a unit ability: Apply +4 to the result of each of those rolls. Any hits produced by those rolls cannot be canceled.
Action card

Before 1 or more of your units would make a roll for a unit ability:

Apply +4 to the result of each of those rolls. Any hits produced by those rolls cannot be canceled.

1in the deck
–chance to draw
Nocomponent action

Source: Uncharted Space