So I have invested a lot of time and saps into maxing out my sorcery shield chance and bonus.  They are both maxed to level 20.  When my beast riders are out protecting my castle I have a chance of 31.24% and a bonus of 100%.

According to what I have read, I have a 31.24% chance to block 100% damage from fireballs sent to my castle.  Am I correct?  Does this include spirit defense?  It refers to all units so I expect the answer would be yes?

Today, and today only I have had close to 20 fb attempts at my castle with more than 100 fb, however I have not seen anything blocked, yes my troops including beast riders have all been out defending.

What is going on?