Doing this at instant speed before your turn is advantageous by hopefully gassing up your hand, plus you can go deep with graveyard synergies
When Cornered by Black Mages works, you get to kill your opponents 3- or 4-drop and net something extra
This also extended to dual lands
Charred GraverobberCharred Graverobber also works with the dead, bringing an outlaw back to your hand from the grave when it enters
In the video, which has been uploaded to YouTube, the hobbyist wears blue surgical gloves and carefully removes the cellophane surrounding the fragile, black-bordered cards and leafs through them
This can be because it's the untap step or because a spell or ability tries to untap the creature, but remember that a stun counter is removed only if the creature is tapped