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

Devour World

Nekro Paradigm

ACTION: Choose a planet that has a technology specialty in a system that contains your units. Destroy any other players' units on that planet. Gain trade goods equal to that planet's combined resource and influence values and draw 1 ability. Then, purge this card.
Nekro Virus originParadigm

ACTION:

Choose a planet that has a technology specialty in a system that contains your units. Destroy any other players' units on that planet. Gain trade goods equal to that planet's combined resource and influence values and draw 1 ability. Then, purge this card.

1in the deck
–chance to draw

Source: Twilight's Fall