{U}, Discard an artifact card: Search your library for an artifact card with mana value 1 or less, reveal it, put it into your hand, then shuffle.
{1}{B}
Demonic Tutor
Sorcery
Search your library for a card, put that card into your hand, then shuffle.
{1}{B}
Diabolic Intent
Sorcery
As an additional cost to cast this spell, sacrifice a creature.
Search your library for a card, put that card into your hand, then shuffle.
{G}{W}
Eladamri's Call
Instant
Search your library for a creature card, reveal that card, put it into your hand, then shuffle.
{W}
Enlightened Tutor
Instant
Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.
{2}{U}
Fabricate
Sorcery
Search your library for an artifact card, reveal it, put it into your hand, then shuffle.
{R}
Goblin Welder
Creature - Goblin Artificer
{T}: Choose target artifact a player controls and target artifact card in that player's graveyard. If both targets are still legal as this ability resolves, that player simultaneously sacrifices the artifact and returns the artifact card to the battlefield.
1 /
1
{1}
Grindstone
Artifact
{3}, {T}: Target player mills two cards. If two cards that share a color were milled this way, repeat this process.
{2}{R}
Imperial Recruiter
Creature - Human Advisor
When Imperial Recruiter enters the battlefield, search your library for a creature card with power 2 or less, reveal it, put it into your hand, then shuffle.
1 /
1
{0}
Mishra's Bauble
Artifact
{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.
{2}
Painter's Servant
Artifact Creature - Scarecrow
As Painter's Servant enters the battlefield, choose a color.
All cards that aren't on the battlefield, spells, and permanents are the chosen color in addition to their other colors.
1 /
3
{2}{W}
Recruiter of the Guard
Creature - Human Soldier
When Recruiter of the Guard enters the battlefield, you may search your library for a creature card with toughness 2 or less, reveal it, put it into your hand, then shuffle.
1 /
1
{G}
Sylvan Tutor
Sorcery
Search your library for a creature card, reveal it, then shuffle and put that card on top.
{2}
Time Vault
Artifact
Time Vault enters the battlefield tapped.
Time Vault doesn't untap during your untap step.
If you would begin your turn while Time Vault is tapped, you may skip that turn instead. If you do, untap Time Vault.
{T}: Take an extra turn after this one.
{2}{R}
Trash for Treasure
Sorcery
As an additional cost to cast this spell, sacrifice an artifact.
Return target artifact card from your graveyard to the battlefield.
{2}{U}
Tribute Mage
Creature - Human Wizard
When Tribute Mage enters the battlefield, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.
2 /
2
{2}{U}
Trinket Mage
Creature - Human Wizard
When Trinket Mage enters the battlefield, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle.
2 /
2
{0}
Urza's Bauble
Artifact
{T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.
{1}
Voltaic Key
Artifact
{1}, {T}: Untap target artifact.
{X}{U}{U}{U}
Whir of Invention
Instant
Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)
Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.
{G}
Worldly Tutor
Instant
Search your library for a creature card, reveal it, then shuffle and put the card on top.