Hmm, the only option that comes to mind right now is a counterspell... Or, if I'm lucky, an ice shield.
I tried using Keen Intellect + counterspell. The opponent lost and is now also leveling up Keen Intellect. And since he's playing as Oro, he gets the artifact earlier, and the opponent manages to escape before it's destroyed.
Творят настолько черные дела,
Что до таких блистательных идей
Не вдруг дойдет и записной Злодей
Темный адепт клана GODS