Blue black mana ramp?

[Pete]

 {Realmwright} choosing swamp +  {Crypt Ghast} + and X spell like  {Bonfire of the Damned}, {Mind Grind}, or  {Rakdos's Return}. You should be able to double your mana, since every land is a swamp sub-type, right?

[Rasser]

Right

You could also use cards like
{Urborg, Tomb of Yawgmoth}
➕
{Cabal Coffers}

[wvEricP]

Right

You could also use cards like
{Urborg, Tomb of Yawgmoth}
➕
{Cabal Coffers}

He might be trying to stay standard