Mad Discovery Time

Deal 2 damage to each creature your opponents control.
Vehicles do not need to be crewed to attack until end of turn.
At the beginning of the next end step, randomly sacrifice an artifact or sacrifice two creatures.
"There's no such thing as magic! Everyone know it's all about technological advancements, which invariably cost a arm or an eye or a few minions. I just hope I lose my human minions rather than my useful machines." - Dr. Methven