Lysandra, Queen of Grief

Whenever a non-spirit creature dies, create a 1/1 white spirit token with flying.
{w}{u}{b}{t}: Exile cards from the top of your library until you reveal a spirit creature, put that card onto the battlefield.
"Mourn for the dead not my son, for she will hear
your sorrow, if your tears fall my son, we'll be burying you on the morrow." Queen of grief