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

Insurrectionist Networking

At the end of your turn, if you resolved a policy ability that turn, you may spend 1 trade good to move 1 of your infantry on the game board into coexistence on a planet in an adjacent system. When you pass, you may purge this card to resolve invasion on all planets that contain your coexisting infantry.
Olradin LeagueBreakthrough

At the end of your turn, if you resolved a policy ability that turn, you may spend 1 trade good to move 1 of your infantry on the game board into coexistence on a planet in an adjacent system.

When you pass, you may purge this card to resolve invasion on all planets that contain your coexisting infantry.

SynergyWarfareBiotic

Source: Discordant Stars