Collectible Card Game Headquarters

Spotted with a Aethersphere Harvester given to AI. AI crewed the harvester, tapping a creature normally to do so, but instead of doing anything with it, it then tapped the now already crewed and animated harvester itself a couple more times as seen in screenshot

This isn't a bug as you should be able to multi crew but is bad AI behavior. We should limit AI to activate it if it hasn't activated the ability already this turn. Especially with abilities with no tap cost AI usually needs help.