Rengar, The Pridestalker

First Strike
Ambush—Rengar, the Pridestalker maintains his abilities and keywords when face down
When this creature enters, play it face down,then manifest dread twice. If this creature becomes blocked while facedown, you may flip it up. If you do, Rengar,the Pridestalker gains double strike until the end of the turn and deals five damage to the defending player.

Bonetooth Necklace—When this creature deals combat damage to a player, manifest dread, then shuffle all facedown c