True Delirium

Target opponent draws a card until he or she has ten cards in his or her hand. That player reveals his or her hand. Separate all cards revealed this
way into two face down piles of five cards each.
The opponent chooses one pile and puts it into their hand, and the other into their graveyard.
"What is true delirium? Knowing what you lost, or knowing you lost something to gain another? Perhaps being lost in what you've lost without any gain at all. Did you really have what you lost but never attained?" -Maddened Cultist