The gist of the argument for the Grail is that such situations will be extremely rare. Besides, how do you envision this? First, the player visits the obelisks, and then what, runs to dig in unexplored territory? If he runs to an already explored location, why couldn't he have achieved the same honestly? By the way, there are other bugs that are difficult to control.
On template L, I think it's not that hard to find the right spot... places 3 weaklings on tiles, one on a spot where he knows for sure the Grail is, and two as decoys... and digs it up... how do you prove he didn't know and just got lucky?
Added after 2 minutes
That's a loss — a leveled-up Mage with Armageddon and on a Bird.
Стримы и обучение тут:
https://www.youtube.com/channel/UCWlnXU5R5RLCMuWzIpBc65Q