This block requires the use of the advanced Petition plugin for basic petitions see the Basic Petitions Feature page.
The Petition List block works in the exact same way as the Post List block with the difference being in the style of the posts/cards that are outputting on the front-end. You also do not the ability to switch between List/Grid view on this block as the Petition styles are standardised.
For this block, you have the option to choose from a Category or use Object Selection.
As with the Post List block, if you select Object Selection, you have the further ability to filter between different Post Types, Taxonomies and Terms to make it easier to find the post you’re looking for.
Working example below: