Card Passives work similar to Actions, but rather than executing when the card is played, they affect the properties of the card in various other ways.

Remove this - This causes the card with this notetag to remove itself from play after use rather than discard it.

Discard if Unplayed - This causes the card with this notetag to discard itself if the user’s turn ends while it is in their hand. Remove if Unplayed - This causes the card with this notetag to remove itself from play if the user’s turn ends while it is in their hand.

Start in Hand - This causes the card to enter the user’s hand at the start of battle, before the Battle Start Actions execute.

Require [expression] - This passive will disable the card from being playable unless the given expression evaluates to true. Multiple Require passives can be in the same card.

Start of Turn: Skill X - At the Start of Turn if this Card is in Hand, then execute Skill ID X.

End of Turn: Skill X - At the end of Turn if this Card is in Hand, then execute Skill ID X.