Mageblood Cavern

Mageblood Cavern enters the battlefield tapped unless you control a Wizard.
Wizard spells you cast cost {1} less to cast.
{t}: Add {u} or {b} to your mana pool.
{t}, Sacrifice a Wizard: Add {u}{u}, {u}{b}, or {b}{b} to your mana pool.
Power and knowledge can lead to dangerous secrets.