TI4 Rules DeskTwilight Imperium 4
Living Rules Reference · v2.0
65

Planetary Shield (Unit Ability)

Units cannot use the “Bombardment” ability against a planet that contains a unit that has the “Planetary Shield” ability.

The “Planetary Shield” ability does not prevent a planet from being affected by the “X-89 Bacterial Weapon” technology.
The “Planetary Shield” ability prevents an L1Z1X player from using their “Harrow” faction ability.
If a war sun is in a system with any number of other players’ units that have the “Planetary Shield” ability, those units are treated as if they do not have that ability.
  1. Units treated as if they do not have a “Planetary Shield” ability cannot use the “Magen Defense Grid” technology.
  2. A war sun can use its “Bombardment” ability against planets that contain units that have the “Planetary Shield” ability.

Source: Twilight Imperium: Fourth Edition — Living Rules Reference v2.0 (September 22, 2020), page 25. Rules text reproduced verbatim; the rulebook’s diagrams are omitted.