Recently my mage player took Psychometry which has introduced an issue with needing to apply modifiers over a range of time frames.
Basically, the player had to roll 1 die for events in the last decade, 3 for the last year, 5 for the last month, 7 for the last week, and 9 for yesterday.
What is the best way to handle this?
What I did was to roll 1 die, then add two each time, taking the total at each stage and then relaying information accordingly.
From memory the rolls were 0,1,2,1,0; making it 0,1,3,5,5 for each level.