The default AI missed three chances to kill and nullify a Doomsayer. First, it attacked everything into the Doomsayer making it one health short of killing it, then played a Defender or Argus... Next it completely missed playing a Truesilver Champion and instead added two more creatures to the board... Third, it missed having one of those creatures be the Ironbeak Owl to silence the Doomsayer... It's been a long time since I've seen a fuck up this bad by the AI.