Haunting of the Howlers

At the beginning of your upkeep, if you have no
cards in hand, sacrifice Haunting of the Howlers.
When Haunting of the Howlers is put into a graveyard from the battlefield, choose one —
• Destroy target permanent.
• Target player discards three cards.
Somehow haunted by their time, howlers still
prowess in the blind moments of their lives.