Azorius Signet

Dimir Signet

Arcane Sanctum

Arcane Sanctum enters tapped.
{T}: Add {W}, {U}, or {B}.

Orzhov Signet

Arcane Signet

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

Command Tower

Caretaker's Talent

(Gain the next level as a sorcery to add its ability.)
Whenever one or more tokens you control enter, draw a card. This ability triggers only once each turn.
{W}: Level 2
When this Class becomes level 2, create a token that's a copy of target token you control.
{3}{W}: Level 3
Creature tokens you control get +2/+2.

Urza, Chief Artificer

Affinity for artifact creatures (This spell costs {1} less to cast for each artifact creature you control.)
Artifact creatures you control have menace.
At the beginning of your end step, create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

Thought Vessel

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

Etherium Sculptor

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

Counterspell

Chief of the Foundry

Other artifact creatures you control get +1/+1.

Unwinding Clock

Untap all artifacts you control during each other player's untap step.

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