[HoneyBadger]

That's a good idea, chrispedersen, and gives me another idea: Using your above idea, is it possible to only grant a bonus, one turn a year? Or one turn out of every three months? I'm thinking here about a seasonal, or anniversary bonus. If you're in the right place at the right time, the site grants you additional power.

There's a huge, vast basis for this type of thing, not only in mythology, which features such things as Halloween, the Summer Solstice, Beltaine, Christmas, 'when the stars align properly', the full moon, etc, but in all manner of plots, where timing is everything.