Razortide Bridge

This land enters tapped.
Indestructible
{T}: Add {W} or {U}.

Junk Winder

Affinity for tokens (This spell costs {1} less to cast for each token you control.)
Whenever a token you control enters, tap target nonland permanent an opponent controls. It doesn't untap during its controller's next untap step.

Plains

Sphinx Summoner

Flying
When this creature enters, you may search your library for an artifact creature card, reveal it, put it into your hand. then shuffle.

Arcane Signet

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

Sphinx of the Steel Wind

Flying, first strike, vigilance, lifelink, protection from red and from green

Dimir Aqueduct

This land enters tapped.
When this land enters, return a land you control to its owner's hand.
{T}: Add {U}{B}.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Baleful Strix

Flying, deathtouch
When this creature enters, draw a card.

Swamp

Dimir Signet

Magister Sphinx

Flying
When this creature enters, target player's life total becomes 10.

Emry, Lurker of the Loch

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
When Emry enters, mill four cards.
{T}: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Seat of the Synod

Thirst for Knowledge

Draw three cards. Then discard two cards unless you discard an artifact card.

Island

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Orzhov Signet

Etherium Sculptor

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

Command Tower

Exotic Orchard

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

Fact or Fiction

Reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other into your graveyard.

Azorius Signet

Commander's Sphere

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

Sharuum the Hegemon

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

Sol Ring

Solemn Simulacrum

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
When this creature dies, you may draw a card.