When a Guardian breaches, it can be placed in Rank 0. Is there a Light value of 0 in effect, meaning no Attack Penalty? Are there any special rules attacking a monster/Guardian in Rank 0?AFAIK, You pretty much got the idea.....
--no light penalty in rank 0
--you can have multiple monsters in rank 0 (e.g., 2 Guardians), but when you attack, you're choosing only 1 monster in rank 0 to attack.