It is unrealistic to visit ALL obelisks in 5 weeks, especially since the game usually lasts less than 5-6 weeks... therefore, it is not relevant.

I also think that this should be specified in the rules. Games usually do not last longer than a month, but sometimes they drag on. And the Grail provides almost a 100% chance of victory.
I wanted to ask another question about banned artifacts: are the Power of the Dragon Father, Cursed Armor, and Angel Wings not banned?
And also, Mountain Portal, Dimension Door, Flight, and Water Walking?
I insist on banning Flight, Dimension Door, and Water Walking, as well as Angel Wings. Let the Mountain Portal remain. There is simply a clause in the rules that requires mandatory breaking through the guards, which can be avoided with these spells and Angel Wings