Renalla, the Last Carian Queen

As long as you control 3 Illusions, Renalla, Queen
of the Moon has indestructible and hexproof.
Whenever you cast an instant or sorcery spell, you
may create a 0/0 illusion named Renalla's Illusion
that get's +1/+1 for each instant or sorcery spell
in your graveyard.
Sacrifice 3 illusions: Search your library for an
instant or sorcery spell and put it into your hand.