TI4 Rules DeskTwilight Imperium 4
Living Rules Reference · v2.0
34

Exhausted

Some cards can be exhausted. A player cannot resolve abilities or spend the resources or influence of an exhausted card.

To exhaust a card, a player flips the card facedown.
During the “Ready Cards” step of the status phase, each player readies all of their exhausted cards by flipping those cards faceup.
A player exhausts their planet cards to spend either the resources or influence on that card.
Abilities, including some found on technology cards, may instruct a player to exhaust a card to resolve those abilities. If a card is already exhausted, it cannot be exhausted again.
  1. Passive abilities on an exhausted card are still in effect while that card is exhausted.
After a player performs a strategic action, they exhaust the strategy card that corresponds to that action.

Source: Twilight Imperium: Fourth Edition — Living Rules Reference v2.0 (September 22, 2020), page 17. Rules text reproduced verbatim; the rulebook’s diagrams are omitted.