Viconia, Drow Apostate

At the beginning of your upkeep, if there are four or more creature cards in your graveyard, return a creature card at random from your graveyard to your hand.
Choose a Background (You can have a Background as a second commander.)

Viconia, Nightsinger's Disciple

Specialize {2}
{1}: Exile target card from a graveyard.

Viconia, Disciple of Rebirth

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gains "You may spend mana as though it were mana of any color to cast this spell." If it has mana value 3 or less, you may put it onto the battlefield.
{1}: Exile target card from a graveyard.

Viconia, Disciple of Strength

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gets +2/+2 and gains "You may spend mana as though it were mana of any color to cast this spell."
{1}: Exile target card from a graveyard.

Viconia, Disciple of Violence

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gets +1/+0 and gains haste and "You may spend mana as though it were mana of any color to cast this spell."
{1}: Exile target card from a graveyard.

Viconia, Disciple of Blood

When this creature specializes, conjure a duplicate of target creature card exiled with this creature into your hand. The duplicate perpetually gains "You may spend mana as though it were mana of any color to cast this spell" and "When this creature enters, each opponent loses 2 life and you gain 2 life."
{1}: Exile target card from a graveyard.

Viconia, Disciple of Arcana

When this creature specializes, choose up to one target creature card and up to one target instant or sorcery card from among cards exiled with this creature. Conjure a duplicate of each of those cards into your hand. The duplicates perpetually gain "You may spend mana as though it were mana of any color to cast this spell."
{1}: Exile target card from a graveyard.