Yor Forger, Thorn Princess

Deathtouch, haste

Whenever a creature enters the battlefield under an opponent's control, if Yor Forger, Thorn Princess
is in the command zone, put a contract counter on
that creature. Yor enters the battlefield tapped and attacking a creature with a contract counter. If
there are no creatures with contract counters, she
enters the battlefield untapped.

"May I have the honor of taking your life?"