Adarkar Wastes

{T}: Add {C}.
{T}: Add {W} or {U}. Adarkar Wastes deals 1 damage to you.

Battlefield Forge

{T}: Add {C}.
{T}: Add {R} or {W}. Battlefield Forge deals 1 damage to you.

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

{T}: You may cast a spell with suspend from your hand. If you do, pay its suspend cost rather than its mana cost. Activate only as a sorcery.

Whenever City of Brass becomes tapped, it deals 1 damage to you.
{T}: Add one mana of any color.

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

Clifftop Retreat enters tapped unless you control a Mountain or a Plains.
{T}: Add {R} or {W}.

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

{T}: Add {C}.
{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.

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

Training Center enters tapped unless you have two or more opponents.
{T}: Add {U} or {R}.

Mystic Monastery enters tapped.
{T}: Add {U}, {R}, or {W}.

Deserted Beach enters tapped unless you control two or more other lands.
{T}: Add {W} or {U}.

Sea of Clouds enters tapped unless you have two or more opponents.
{T}: Add {W} or {U}.

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

Sundown Pass enters tapped unless you control two or more other lands.
{T}: Add {R} or {W}.

Glacial Fortress enters tapped unless you control a Plains or an Island.
{T}: Add {W} or {U}.

Spectator Seating enters tapped unless you have two or more opponents.
{T}: Add {R} or {W}.

({T}: Add {W} or {U}.)
Prairie Stream enters tapped unless you control two or more basic lands.