Arcane Signet

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

Sol Ring

{T}: Add {C}.
{T}: Add {W} or {B}. This artifact deals 1 damage to you.

{T}: Add {C}.
{T}: Add {W} or {U}. This artifact deals 1 damage to you.

{2}, {T}, Sacrifice this artifact: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Flying
When Sharuum enters, you may return target artifact card from your graveyard to the battlefield.

{T}: Add one mana of any color in your commander's color identity.
Sacrifice this artifact: Draw a card.

Whenever this creature or another creature dies, target player loses 1 life and you gain 1 life.

{T}: Add {C}.
{T}: Add {U} or {B}. This artifact deals 1 damage to you.

{T}: Add {C}.
{1}, {T}, Sacrifice this artifact: Draw a card.