Arcane Signet

{T}: Add one mana of any color in your commander's color identity.

Cascade Bluffs

{T}: Add {C}.
{U/R}, {T}: Add {U}{U}, {U}{R}, or {R}{R}.

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

You have no maximum hand size.
{T}: Add one mana of any color.

This land enters tapped. As it enters, choose a color other than blue.
{T}: Add {U} or one mana of the chosen color.

This land enters tapped.
{T}: Add {U} or {R}.

Draw two cards. Then discard a card at random unless you pay {E}{E} (two energy counters).

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

This land enters tapped unless you control two or more other lands.
{T}: Add {U} or {R}.

This land enters tapped unless you control two or fewer other lands.
{T}: Add {U} or {R}.

This land enters tapped unless you control an Island or a Mountain.
{T}: Add {U} or {R}.

As this land enters, you may reveal an Island or Mountain card from your hand. If you don't, this land enters tapped.
{T}: Add {U} or {R}.

This land enters tapped. As it enters, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

{T}, Pay 1 life: Add {U} or {R}.
{1}, {T}, Sacrifice this land: Draw a card.

This land enters tapped unless a player has 13 or less life.
{T}: Add {U} or {R}.