Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Phyrexian Tower

{T}: Add {C}.
{T}, Sacrifice a creature: Add {B}{B}.

{2}, {T}: Add {B} for each Swamp you control.

{T}: Add {C}.
{2}, {T}: Each player draws a card, then discards a card.

{T}: Add {C}.
{1}{U}{R}, {T}: Draw a card, then discard a card.

{T}: Add {C}.
{T}, Sacrifice a creature: You gain 1 life.

{T}: Add {C}.
{2}{B}{G}, {T}, Sacrifice a creature: Draw a card.

Each land is a Forest in addition to its other land types.