Gloomlake Verge

{T}: Add {U}.
{T}: Add {B}. Activate only if you control an Island or a Swamp.

Timbercrown Pathway

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

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

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

{T}, Pay 1 life, Sacrifice Arid Mesa: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

({T}: Add {B} or {G}.)
As Overgrown Tomb enters, you may pay 2 life. If you don't, it enters tapped.

Rejuvenating Springs enters tapped unless you have two or more opponents.
{T}: Add {G} or {U}.

{T}: Add {W}.
{T}: Add {U}. Activate only if you control a Plains or an Island.

{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.

({T}: Add {G} or {U}.)
As Breeding Pool enters, you may pay 2 life. If you don't, it enters tapped.

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

Shipwreck Marsh enters tapped unless you control two or more other lands.
{T}: Add {U} or {B}.