Cryptic Reef enters tapped.
{T}: Add {G} or {U}.
{2}{G}{U}, {T}, Sacrifice Cryptic Reef: Draw a card.

Cumulus Soundvein enters tapped.
When Cumulus Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than white.
{T}: Add {W}.

Dark Horizon enters tapped.
{T}: Add {C} or {B}.
{1}, Discard Dark Horizon: Scry 2.

{6}, {T}, Sacrifice Deafening Loudspeaker: It deals 5 damage to target creature. This ability costs {1} less to activate for each attacking creature you control.

Deeplife Cavern enters tapped unless you control a Forest.
{T}: Add {U} or {B}.

Desolate Soundvein enters tapped.
When Desolate Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than black.
{T}: Add {B}.

{T}: Add three mana of different colors.

Drizzling Cloister enters tapped.
{T}: Add {G} or {U}.
{T}, Discard another card named Drizzling Cloister: Draw a card.

Edgeland Market enters tapped unless you control a basic non-Mountain land.
{T}: Add {R}.
{2}{R}, {T}: Create a 0/1 white Goat creature token.

When Electromagnetic Geode enters, draw a card.
{2}, {T}, Sacrifice Electromagnetic Geode: Add two mana of different colors.

Exile the top four cards of your library. You may play them until you play a card not exiled this way.

Ephemeral Mire enters tapped.
{T}: Add {U} or {B}.
{4}{U/B}: Until end of turn, Ephemeral Mire becomes a 3/2 black and blue Horror creature until end of turn and can't be blocked this turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to black and blue. Activate only once each turn.

{T}: Add {C}.
{2}, {T}: For each color among permanents you control, add one mana of that color.

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

Executive Office enters tapped.
{T}: Add {B} or {R}.
{4}: Make a pledge. Activate only as a sorcery.

Field Laboratory enters tapped.
{T}: Add {G} or {U}.
{1}, Discard Field Laboratory: Scry 2.

Before equipped creature would assign, deal, or be dealt damage, sacrifice Figy Berry. If you do, equipped creature gets +2/+2 until end of turn.
Equip {1}
{7}, Sacrifice Figy Berry: Destroy target nonland permanent.

Draw a card. If you control no creatures, create a 1/1 colorless Cyborg artifact creature token.

This spell costs {1} less to cast if it targets a spell you control and costs {1} less to cast if it targets a spell with mana value 3 or less.
Copy target spell. You may choose new targets for the copy.

Equipped creature gets +2/+2 and can't be blocked by more than one creature.
Equip {4}

Fortress Arena enters tapped.
{T}: Add {R} or {W}.
{2}{R}{W}, {T}, Sacrifice Fortress Arena: Draw a card.

Frigid Highlands enters tapped unless you control an Island.
{T}: Add {R} or {G}.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast Shrine spells or activate abilities of Shrines.

Gates to the Underworld enters tapped.
{T}: Add {W} or {B}.
{5}{W/B}: Gates to the Underworld becomes a 3/4 white and black Construct creature with lifelink until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to white and black. Activate only once each turn.