Zera, Dreadweaver Matron

When you cast Zera, Dreadweaver Matron, if you cast her from the command zone, you may search your library for up to X cards where X is the number of times you have cast her from the command zone, then put those cards into your hand. If you do, shuffle your library.
When Zera, Dreadweaver Matron goes to the command zone, you may return a card from your graveyard to your hand.