Hello judges.
I've created a document to clarify how policy should be interpreted in interactions with (no so) new Guilds of Ravnica cards.
This document is created based on the October 5th 2018 IPG and MTR, future changes of those documents may make ruling in this article outdated.

https://blogs.magicjudges.org/whatsupdocs/2018/12/08/guilds-of-ravnica-rulings-clarifications/

I'm planning to continue doing this article every set, but hopefully closer to the actual release of each set.