Kara Kane, Mourning Princess

When Kara Kane, Mourning Princess enters the battlefield, you may sacrifice a nonlegendary creature, if you do she has haste and cannot be
blocked until the end of turn.
Faren creatures you control get +1/+1 and have, "Whenever this creature deals damage to a player, you may draw a card. If you do, lose 1 life."
"Only through swift action and decisive sacrifices will the Faren remain in power."