Kadyra, Queen of Thieves

Prowl {u}{b}{r} (You may cast this for its prowl cost
if you dealt combat damage to a player this turn with
a Human or Rogue.)
Whenever you cast a Rogue spell, up to one
target Rogue creature can't be blocked this turn.
Whenever one or more Rogue creatures you
control deal combat damage to a player, scry X,
where X is the number of tapped Rogues
you control.