Commander 2018

Submerged Boneyard enters the battlefield tapped. {T}: Add {U} or {B}.

{T}: Add {C}. {4}, {T}: Investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

{T}: Target player exiles a card from their graveyard. {1}, Sacrifice Scrabbling Claws: Exile target card from a graveyard. Draw a card.

{T}: Add {C}{C}. {2}, {T}, Sacrifice Hedron Archive: Draw two cards.

Akoum Refuge enters the battlefield tapped. When Akoum Refuge enters the battlefield, you gain 1 life. {T}: Add {B} or {R}.

Azorius Chancery enters the battlefield tapped. When Azorius Chancery enters the battlefield, return a land you control to its owner's hand. {T}: A...

Barren Moor enters the battlefield tapped. {T}: Add {B}. Cycling {B} ({B}, Discard this card: Draw a card.)

Whenever another nontoken artifact enters the battlefield under your control, you may pay {2}. If you do, create a token that's a copy of that arti...

Mortuary Mire enters the battlefield tapped. When Mortuary Mire enters the battlefield, you may put target creature card from your graveyard on top...

Halimar Depths enters the battlefield tapped. When Halimar Depths enters the battlefield, look at the top three cards of your library, then put the...

Indestructible {T}: Add {C}.

{T}: Add {C}. {3}{G}, {T}, Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, t...

When Myr Battlesphere enters the battlefield, create four 1/1 colorless Myr artifact creature tokens. Whenever Myr Battlesphere attacks, you may ta...

Flying

{3}: Untap Retrofitter Foundry. {2}, {T}: Create a 1/1 colorless Servo artifact creature token. {1}, {T}, Sacrifice a Servo: Create a 1/1 colorless...

{2}, {T}: Draw a card. Activate this ability only if you control three or more lands with the same name.

({T}: Add {U}.)

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

(Seat of the Synod isn't a spell.) {T}: Add {U}.

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

({T}: Add {G}.)

({T}: Add {R}.)

{T}: Add {R}.

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