Fair Maiden's Kiss

Whenever you cast a card for its adventure cost or
a creature you control dies, exile it with a farewell counter on it instead.
You may cast cards you own with one or more farewell counters on it from exile. If you do, it
costs {1} less to cast. If a creature you control with
a farewell counter on it would this turn die,
remove each counter from it and exile it instead.
"Godspeed!"