![Riftbound Unit: Crescent Guardian. If you've played a spell this turn, you may pay [C] as an additional cost to play me. If you do, I enter ready.](https://cmsassets.rgpub.io/sanity/images/dsfx7636/game_data_live/0ff22e9a517d029fd17cfbbbc93ca2f90c2c676c-744x1039.png?accountingTag=RB&w=744&fm=webp)
Why linked
Q&A paragraph mentions “Crescent Guardian”: go to paragraph
The second meaning is, "finalize an item on the chain." This is the play that appears in other conditional statements and effects that check if cards have been played, in cards like Battering Ram, Crescent Guardian, and the Legion dependent keyword.