unless u use locals!! Crash city if not used right well desyncoz
So, what exactly does SUI stand for?
And, (using your little non-existant acronym) most spells that are MUI are automatically 'SUI', as it's not possible for a unit to cast it more than once at the same time.
BTW, Best is SUI, same spell can be casted by same unit at same time
The Same unit channels 2 abillities that are done by the same trigger.
however
MUI > SUI