Command Tower

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

Choked Estuary

As Choked Estuary enters, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters tapped.
{T}: Add {U} or {B}.

Darkslick Shores enters tapped unless you control two or fewer other lands.
{T}: Add {U} or {B}.

Temple of Deceit enters tapped.
When Temple of Deceit enters, scry 1.
{T}: Add {U} or {B}.

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