I've seen the AI cast Spite of Mogis for no damage, and often for not enough damage to kill anything, even when combined with other spells.

It can get this silly, and I optionally speculate that it has something to do with Scry, in which case Scry causes conunter-productive behavior in general:



The AI had 4 direct damage cards in hand at the beginning of the turn. 2 Spite of Mogis and 2 Scouring Sands. Spite deals X damage (no. of sorceries in graveyards) and has Scry 1, and Scouring Sands deals 1 damage to all opponents, costs 1R and has scry 1.

The AI first cast a Spite of Mogis for 0 at the djinn, then the second Spite for 1 at the Pyre Charger.

If it cast Scouring Sands first, it would've both bumped the Spite of Mogis damage AND killed the Pyre Charger AND scried for 1. It could even kill the Djinn next turn with the remaining 3 cards. (Scouring Sands for 1 damage, Spite of Mogis for 2 more, another Spite of Mogis for 3 more).