Study Hall

Land

: Add .
, : Add one mana of any color. When you spend this mana to cast your commander, scry X, where X is the number of times it's been cast from the command zone this game.

Haven of the Spirit Dragon

Land

: Add .
: Add one mana of any color. Spend this mana only to cast a Dragon creature spell.
, , Sacrifice Haven of the Spirit Dragon: Return target Dragon creature card or Ugin planeswalker card from your graveyard to your hand.

Path of Ancestry

Land

Path of Ancestry enters the battlefield tapped.
: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

The Grey Havens

Legendary Land

When The Grey Havens enters the battlefield, scry 1.
: Add .
: Add one mana of any color among legendary creature cards in your graveyard.

Ally Encampment

Land

: Add .
: Add one mana of any color. Spend this mana only to cast an Ally spell.
, , Sacrifice Ally Encampment: Return target Ally you control to its owner's hand.

Bucolic Ranch

Land — Desert

: Add .
: Add one mana of any color. Spend this mana only to cast a Mount spell.
, : Look at the top card of your library. If it's a Mount card, you may reveal it and put it into your hand. If you don't put it into your hand, you may put it on the bottom of your library.

Command Tower

Land

: Add one mana of any color in your commander's color identity.

Command Tower // Command Tower

: Add one mana of any color in your commander's color identity.

Command Tower

: Add one mana of any color in your commander's color identity.

Conduit Pylons

Land — Desert

When Conduit Pylons enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
: Add .
, : Add one mana of any color.

Exotic Orchard

Land

: Add one mana of any color that a land an opponent controls could produce.

Gallifrey Council Chamber

Legendary Land

When Gallifrey Council Chamber enters the battlefield, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
: Add .
: Add one mana of any color. Spend this mana only to cast a Time Lord or Alien spell or activate an ability of a Time Lord or Alien.

Glimmervoid

Land

At the beginning of the end step, if you control no artifacts, sacrifice Glimmervoid.
: Add one mana of any color.

Gond Gate

Land — Gate

Gates you control enter the battlefield untapped.
: Add .
: Add one mana of any color that a Gate you control could produce.

Heap Gate

Land — Gate

: Add .
, : Add one mana of any color.
, , Tap an untapped Gate you control: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Holdout Settlement

Land

: Add . ( represents colorless mana.)
, Tap an untapped creature you control: Add one mana of any color.

Mox Amber

Legendary Artifact

: Add one mana of any color among legendary creatures and planeswalkers you control.

Mox Opal

Legendary Artifact

Metalcraft — : Add one mana of any color. Activate only if you control three or more artifacts.

Plaza of Heroes

Land

: Add .
: Add one mana of any color. Spend this mana only to cast a legendary spell.
: Add one mana of any color among legendary permanents you control.
, , Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

Public Thoroughfare

Land

Public Thoroughfare enters the battlefield tapped.
When Public Thoroughfare enters the battlefield, sacrifice it unless you tap an untapped artifact or land you control.
: Add one mana of any color.

Rainbow Vale

Land

: Add one mana of any color. An opponent gains control of Rainbow Vale at the beginning of the next end step.