Qualyx

Toxic 1 (Players dealt combat damage by this
creature also get a poison counter.)
Prowl {1}{p/w} (You may cast this for its prowl cost if
you dealt combat damage to a player this turn with a creature that shares a creature type with it.)
Whenever a Nadsokori, or Rogue you control
deals combat damage to a player, if Qualyx is in
your graveyard, you may return Qualyx to
your hand.