Traumatic Revelation
From March of the Machine set
Traumatic Revelation
Sorcery
Target opponent reveals their hand. You may choose a creature or battle card from it. If you do, that player discards that card. If you don't, incubate 3. (Create an Incubator token with three +1/+1 counters on it and " : Transform this token." It transforms into a 0/0 Phyrexian artifact creature.)