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

Stellar Atomics

For: Each player places 1 of their control tokens on this card. During the agenda phase, players who do not have a control token on this card cannot vote, resolve transactions, or play action cards. All players can perform the following action: ACTION: Discard your control token from this card and lose 1 victory point to destroy all units in 1 non-home system. The proponent: Chooses 1 player to gain war sun unit upgrade technology. Against: The player with the most victory points gains 1 victory point.
Agenda – Law

Law

For: Each player places 1 of their control tokens on this card. During the agenda phase, players who do not have a control token on this card cannot vote, resolve transactions, or play action cards. All players can perform the following action:

ACTION: Discard your control token from this card and lose 1 victory point to destroy all units in 1 non-home system.

The proponent: Chooses 1 player to gain war sun unit upgrade technology.

Against: The player with the most victory points gains 1 victory point.

1in the deck
–chance to draw

Source: Black Spectrum – Agenda Pack