Rakdos Carnarium

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {B}{R}.

Reliquary Tower

You have no maximum hand size.
{T}: Add {C}.

This land enters tapped.
{T}: Add {U}.
Cycling {2} ({2}, Discard this card: Draw a card.)

{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.

This land enters tapped.
When this land enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

This land enters tapped.
{T}: Add {W}, {B}, or {G}.

{T}: Add {C}.
{2}, {T}, Sacrifice a Desert: Exile all graveyards.

This land enters tapped.
{T}: Add {W}.
Cycling {W} ({W}, Discard this card: Draw a card.)

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {G}{W}.

Whenever you cycle a card, you may have this enchantment become a copy of another target permanent until your next turn, except it has this ability.

{T}: Add {C}.
{T}: Add {U} or {R}. This land deals 1 damage to you.

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {G}{U}.

This land enters tapped.
{T}: Add {R}.
Cycling {2} ({2}, Discard this card: Draw a card.)

({T}: Add {B} or {R}.)
This land enters tapped unless you control two or more basic lands.