Arcane Signet

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.

Commander's Sphere

Artifact

: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.

Opal Palace

Land

: Add .
, : Add one mana of any color in your commander's color identity. If you spend this mana to cast your commander, it enters with a number of additional +1/+1 counters on it equal to the number of times it's been cast from the command zone this game.

Path of Ancestry

Land

Path of Ancestry enters 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.)

Abstergo Entertainment

Legendary Land

: Add .
, : Add one mana of any color.
, , Exile Abstergo Entertainment: Return up to one target historic card from your graveyard to your hand, then exile all graveyards. (Artifacts, legendaries, and Sagas are historic.)