The theory here is all get cannot be countered, with blue being tertiary at this effect.
Meanwhile get hexproof with White theoretically being tertiary in Hexproof.
I might shift "the can't be countered" to "can't be countered by spells or abilities" as trinket text. Or shift just "the can't be countered" to the anti-blue common instead.
Changed from nonblack to nonblue. Since spells fizzling is no longer considered them being countered, changed text to a simple "Spells can't be countered".
It's weird to see this in "nonblack" rather than "nonblue"
A great point.
The theory here is

all get cannot be countered, with blue being tertiary at this effect.
Meanwhile 
get hexproof with White theoretically being tertiary in Hexproof.
I might shift "the can't be countered" to "can't be countered by spells or abilities" as trinket text. Or shift just "the can't be countered" to the anti-blue common instead.
Changed from nonblack to nonblue. Since spells fizzling is no longer considered them being countered, changed text to a simple "Spells can't be countered".