Joe, Master of Jars

Addendum - If you cast this spell during your
Main phase, detain target creature an opponent
controls and you gain 5 Jars
Whenever a creature you control deals combat
damage to a player, that player reveals X cards
from the top of their library where X is the
number of Jars you control. Then that player
puts all cards revealed this way into his or her
graveyard.