The Grail – what is it?

What if the computer has already found the Grail? If a hero with the Grail loses a battle (even if he flees), the Grail is lost :-(

P.S.: I think, like many others, I don't care about the Grail's properties. (Except for the Conflux and Tower Grails). The main thing is the increase in stats and the fifth-level skills!!!

The main thing is the increase in stats and the fifth-level skills - I agree with that, but for example, in Fortress, if you find a Grail, you're good to go!!! (You stand in the castle, build up your army, and when someone attacks, your hero gets +20 to attack). But overall, I agree with you. FIFTH-LEVEL SKILLS RULE!!!!!