Best Budget Mana Rocks for Commander

Flying {T}: Add one mana of any color. Crew 4 (Tap any number of creatures you control with total power 4 or more: This Vehicle becomes an artifact creature until end of turn.)

{T}: Choose a player. That player adds one mana of any color they choose.

{T}: Add {C} for each artifact you control named Powerstone Shard.

{T}: Add {G}, {W}, or {U}.

{T}: Add {G} or {W}.

Whenever one or more -1/-1 counters are put on a creature, put a charge counter on this artifact. {T}: Add one mana of any color. {5}, {T}, Sacrifice this artifact: Create X tapped 2/2 colorless Scarecrow artifact creature tokens, where X is the number of charge counters on this artifact.

{T}: Add {U} or {B}.

{T}: Add {R}, {G}, or {W}.

This artifact enters tapped. {T}: Add {G}.

{T}: Add {R} or {G}.

This artifact enters tapped. {T}: Add {U}.

This artifact enters tapped. {T}: Add {W}.

{T}: Add {W} or {U}.

{T}, Pay 2 life: Add {B}{B}. You may cast spells from your graveyard. Only mana produced by abilities that caused you to lose life may be spent to cast spells this way. (Damage causes loss of life.) If a card would be put into your graveyard from anywhere, exile it instead.

{T}: Add {C}{C}.

{T}: Add {B} or {R}.

This artifact enters tapped. {T}: Put a charge counter on this artifact. Add X mana of any one color, where X is the number of charge counters on this artifact.

{T}: Add {W}, {U}, or {B}.

This artifact enters with X charge counters on it. {T}: Choose a color. Add one mana of that color for each charge counter on this artifact.

{T}: Add {U}, {B}, or {R}.

This artifact enters tapped. {T}: Add two mana of different colors.

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

{T}: Add {B}, {R}, or {G}.

This artifact enters tapped. {T}: Add {R}.

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

{1}, {T}: Add {W}{U}.

This artifact enters tapped. {T}: Add {C}{C}.

{1}, {T}: Add {W}{B}.

{1}, {T}: Add {B}{G}.

{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {G}, then add an additional {G} for each charge counter removed this way.

This artifact enters tapped. {T}: Add {B}.

Whenever you cast a spell with {X} in its mana cost, put two charge counters on this artifact. {T}: Add one mana of any color. {T}: Add {C} for each charge counter on this artifact. Spend this mana only on costs that contain {X}.

{1}, {T}: Add {G}{U}.

{T}, Tap an untapped creature you control: Add one mana of any color.

{1}, {T}: Add {U}{R}.

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

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

{T}: Add one mana of any color. {T}: Put a charge counter on this artifact. At the beginning of your first main phase, remove all charge counters from this artifact. Add one mana of any color for each charge counter removed this way.

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

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

{1}, {T}: Add {R}{G}.

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

{1}, {T}: Add {G}{W}.

{1}, {T}: Add {R}{W}.

{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {W}, then add an additional {W} for each charge counter removed this way.

{T}: Add three mana of any one color.

{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {R}, then add an additional {R} for each charge counter removed this way.

This artifact enters tapped. {T}: Add one mana of any color that a basic land you control could produce.

{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {U}, then add an additional {U} for each charge counter removed this way.

{2}, {T}: Put a charge counter on this artifact. {T}, Remove any number of charge counters from this artifact: Add {B}, then add an additional {B} for each charge counter removed this way.

{T}: Add one mana of any color.

{T}: Add {G}. Sacrifice this artifact: Add {G}.

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

{2}: Put a charge counter on this artifact. Remove a charge counter from this artifact: Add one mana of any color.

Untap this artifact during each other player's untap step. {T}: Add one mana of any color.

Suspend 3—{1} (Rather than cast this card from your hand, pay {1} and exile it with three time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) {T}: Add {C}{C}.

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

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

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) This artifact enters tapped. {T}: Add {C}{C}{C}.

{1}, {T}: Add {U}{B}.