From DominionStrategy Wiki
|At the start of your turn, trash a card from your hand.|
Cathedral is a Project from Renaissance. It forces you to trash a card from your hand at the start of every turn. Since the trashing in mandatory, +Buy, junkers, and gainers can help you gain cards to trash feed it.
 Official FAQ
- Once you have claimed this ability, it is not optional.
- There is no way to remove your cube.
 English versions
|At the start of your turn, trash a card from your hand.||November 2018|
 Other language versions
 Secret History