Giorno Giovanna

{t}, {1}{g}{g}, Sacrifice a noncreature permanent:
Exile the top cards of your library until you exile a
creature with converted mana cost equal to or less
that the sacrificed permanent’s. Put that creature
onto the battlefield.
Whenever a creature dies, put an arrow counter
on Giorno Giovanna, then when Giorno Giovanna
has 10 arrow counters on him, transform him.