So, just to clarify: Admiral Screed's text states:
Once per activation, when a friendly ship is attacking, it may spend 1 die to change a die to a face with a [crit] icon.
If used on a black die, is one of the faces with a crit and a hit on the same face a valid option to be changed to?
Also, is the die spent before or after rolling? And if after, is this before or after defensive tokens are spent?