Evolving Wilds

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

Mountain

{T}: Add {C}{C}. Activate only if you control five or more lands.

Swiftwater Cliffs enters the battlefield tapped.
When Swiftwater Cliffs enters the battlefield, you gain 1 life.
{T}: Add {U} or {R}.

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

Highland Lake enters the battlefield tapped.
{T}: Add {U} or {R}.