Moria

As Moria comes into play, you may pay 2 life. If you don't, Moria comes into play tapped.
{t}: add {b} or {r} to your mana pool
{4}, {t}, Sacrifice 4 creatures: Exile Moria. Put a 6/9 red and black Balrog creature token with indestructible, deathtouch and trample onto the battlefield.