Blinkmoth Urn

At the beginning of each player's first main phase, if Blinkmoth Urn is untapped, that player adds {C} for each artifact they control.

Sol Ring

As Cloud Key enters, choose artifact, creature, enchantment, instant, or sorcery.
Spells you cast of the chosen type cost {1} less to cast.

Whenever you cast a historic spell, draw a card. (Artifacts, legendaries, and Sagas are historic.)

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
Flying
When Thought Monitor enters, draw two cards.

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

{T}: Add {C}.
{1}, {T}: Add one mana of any color.

Basalt Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{3}: Untap Basalt Monolith.

{T}: Add {C}.
{1}, {T}, Sacrifice Mind Stone: Draw a card.

{T}: Add {C}.
{T}: Add {U} or {R}. Talisman of Creativity deals 1 damage to you.

You have no maximum hand size.
{T}: Add {C}.

Artifact spells you cast cost {1} less to cast.

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

Flying
Historic spells you cast cost {1} less to cast. (Artifacts, legendaries, and Sagas are historic.)