{T}, Sacrifice Leyshard: Draw a card. Add one mana of any type.

Equipped creature gets +2/-1.
Equip {1}

{5}: Lightspeed Cruiser becomes an artifact creature until end of turn.
Crew 2

{1}, {T}: Add one mana of any color.
{2}, Sacrifice Living Compass: Draw a card.

Whenever this creature transforms into Lone Switchblade or another permanent you control transforms, each opponent loses 1 life and you gain 1 life.

Looming Skyscrapers enters tapped.
{T}: Add {B} or {G}.
{4}: Make a pledge. Activate only as a sorcery.

Before equipped creature would assign, deal, or be dealt damage, sacrifice Lum Berry. If you do, equipped creature gets +1/+1 until end of turn.
When you sacrifice Lum Berry, you may exile equipped creature, then return that card to the battlefield under its owner's control. Put a +1/+1 counter on it.
Equip {1}

Lunar Plateau enters tapped.
{T}: Add {W} or {B}.
{1}, Discard Lunar Plateau: Scry 2.

Magdalena Bay enters tapped.
{T}: Add {G}, {W}, or {U}.
{VP}{VP}{VP}{VP}, Discard Magdalena Bay: Target creature gets +3/+3 and gains menace until end of turn.

{2}: Magnetic Mystery gets +1/+0 until end of turn. Activate only as a sorcery.
As long as you control another artifact, Magnetic Mystery has flying.

{1}: Untap Magnetling.
{1}: Magnetling can't be blocked by creatures with power 2 or less this turn.
{1}: Choose a card type. Magnetling loses that type until end of turn.
{1}: Magnetling gets +1/-1 or -1/+1 until end of turn.

{2}, {T}: Exile target creature you control, then reveal the top card of your library. If the revealed card is a creature card, put it onto the battlefield. Otherwise, return the exiled card to the battlefield under its owner's control.

Mass of Remains's power is equal to the total number of permanent cards you own in your graveyard and in exile.
Spellcharge 3

Miasmic Cove enters tapped.
{T}: Add {B} or {G}.
{4}{B/G}: Miasmic Cove becomes a 2/3 black and green Snake creature with deathtouch until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to black and green. Activate only once each turn.

{T}: Add {C}.
{T}: Surveil 1. Return Mirage Island to its owner's hand.

Mirrormeld Spire has all abilities of land cards integrated onto permanents you control.
{T}: Add {C}.
{C}, {T}: Integrate the top card of target player's library.

Nascent Lightvein enters tapped.
As Nascent Lightvein enters, choose a color. Then if you control three permanents that could each produce a different color of mana, untap it.
{T}: Add one mana of the chosen color.

Nebulous Ring enters tapped.
{T}: Add {C} or {W}.
{1}, Discard Nebulous Ring: Scry 2.

Neglected Slums enters tapped.
{T}: Add {R} or {G}.
{4}: Make a pledge. Activate only as a sorcery.

Neo Stehlia enters tapped unless you control a basic non-Plains land.
{T}: Add {W}.
{2}{W}, {T}: Choose a creature type. Creatures you control of the chosen type get +1/+0 until end of turn.

Trample, ward {4}
Equipped creature gets +4/+4 and has trample and ward {4}.
Equip {4}
Spellcharge 8

Nessian Woods enters tapped.
{T}: Add {R} or {G}.
{6}{R/G}: Nessian Woods becomes a 5/4 red and green Dryad creature with trample until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to red and green. Activate only once each turn.

Nimbus of Thought enters tapped.
{T}: Add {U} or {R}.
{4}{U/R}: Until end of turn, Nimbus of Thought becomes a 3/3 blue and red Elemental creature with “Whenever this creature becomes tapped, you may discard a card. If you do, draw a card.” It's still a land. This ability costs {X} less to activate, where X is your devotion to blue and red. Activate only once each turn.

Trample
Amity — Whenever Old-Growth Gecko attacks, put a +1/+1 counter on another creature you control. If exactly one other creature attacked with it, this ability triggers three times instead.