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

Adjudicator Ba'al - Nova Seed

Starscourge - Gravitational Collapse

After you move a war sun into a non-home system other than Mecatol Rex: You may destroy all other players' units in that system and replace that system tile with the Muaat supernova tile. If you do, purge this card and each planet card that corresponds to the replaced system tile. Unlock: Have 3 scored objectives.
The Embers of MuaatLeader – Hero

Hero

After you move a war sun into a non-home system other than Mecatol Rex:

You may destroy all other players' units in that system and replace that system tile with the Muaat supernova tile. If you do, purge this card and each planet card that corresponds to the replaced system tile.

Unlock

Have 3 scored objectives.

Source: Prophecy of Kings

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  • Any method of movement is sufficient to trigger this ability, not only tactical action movement. For example, the Muaat player may trigger Nova Seed when they retreat.
    • If the Mahact player moves the Muaat player’s war sun via the use of their Benediction hero ability, the Muaat player cannot trigger Nova Seed.
  • If the war sun is in the target system when it is activated, it must move out of the system, and back in, for Nova Seed to be able to be triggered.
  • Any command tokens, frontier tokens and the Muaat player’s units on the replaced system tile are transferred to the new supernova tile. Any Creuss wormhole tokens are returned to the Creuss player and any Ul sleeper tokens are returned to the Ul player. All other tokens are purged.
  • The Muaat player’s units may exist in and move out of the supernova system, even if the Muaat player does not own Magmus Reactor.
  • If the Muaat player owns the Thunder’s Edge version of Magmus Reactor, and resolves this ability during a tactical action, they will be able to produce units during the Production step, if the Muaat player still has units in the system.
  • Nova Seed cannot target the home system of an eliminated player.
  • Nova Seed may target the Creuss Gate (tile 17) or the Wormhole Nexus (tile 82).
  • The Empyrean player cannot use the ability of their agent, Acamar, on the Muaat player after they use Nova Seed if the original system tile contained planets.