I've made Font of Fortunes a dungeon card for testing purposes (instead of power struggle). What tends to happen is that the AI will often activate it even if it causes the AI to have to discard card because of it (like activating it on turn 2).

It's posisble that the AI simply doesn't have anything to do with it at that moment, but instant based card draw should be used at the end of the enemy turn, and most often if it isn't going to cause you to discard. (Exception to the last is when there are no lands or nothing but lands in the AI's hand). At the very least.

Also, prioritizing card draw over playing creatures is also probably not the best case, if it is the case.