Alright Prosers! Reapers back from hiatus so its time to give those noggins a flogging with another riddle challenge! Give us your best riddle, it can be one you heard or one you made up so long as there is a legitimate answer. Reaper will kick it off as always.
I read the prompt and the riddle came out.
"I am that which defines all as individual and also defines all as a simultaneous whole."