You may choose not to untap Amber Prison during your untap step.

, : Tap target artifact, creature, or land. That permanent doesn't untap during its controller's untap step for as long as Amber Prison remains tapped.

Vigilance

Whenever you attack, you create a Food token for each player being attacked. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

, , Tap X untapped Foods you control: Create X 1/1 white Human creature tokens.

Battered Golem doesn't untap during your untap step.

Whenever an artifact enters, you may untap Battered Golem.

When Berg Strider enters, tap target artifact or creature an opponent controls. If was spent to cast this spell, that permanent doesn't untap during its controller's next untap step. ( is mana from a snow source.)

Affinity for artifacts (This spell costs less to cast for each artifact you control.)

Untap all artifacts.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. Create a Blood token. (It's an artifact with ", , Discard a card, Sacrifice this artifact: Draw a card.")

Vigilance

Whenever an artifact or creature an opponent controls enters untapped, they may tap that permanent. If they don't, you create a 1/1 white Vampire creature token with lifelink.

Tap two untapped artifacts you control: Untap target artifact.

When Corridor Monitor enters, untap target artifact or creature you control.

When Dee Kay, Finder of the Lost enters, open an Attraction.

Whenever you roll a 2, each opponent loses 1 life and you gain 1 life.

Whenever you roll a 4, you may tap or untap target artifact or creature.

Whenever you roll a 6, return target creature card from your graveyard to your hand.

, Tap two untapped Humans you control: Exile target artifact or enchantment.

Whenever Dross Scorpion or another artifact creature dies, you may untap target artifact.

Enchant artifact or creature

Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.

, Sacrifice a creature: Put two +1/+1 counters on target creature.

, Remove a counter from a creature you control: Create a Treasure token.

, Sacrifice an artifact: Create a 2/1 white and black Inkling creature token with flying.

: Untap Fain, the Broker.

: Untap target artifact.

You may choose not to untap Frightshroud Courier during your untap step.

, : Target Zombie creature gets +2/+2 and has fear for as long as Frightshroud Courier remains tapped. (It can't be blocked except by artifact creatures and/or black creatures.)

Gain control of target creature until end of turn. Untap that creature. Until end of turn, it gains haste and "Whenever this creature deals combat damage to a player or battle, create a Treasure token." (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Whenever a nontoken creature enters, if Genesis Chamber is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.

(: Add .)

Gingerbread Cabin enters tapped unless you control three or more other Forests.

When Gingerbread Cabin enters untapped, create a Food token. (It's an artifact with ", , Sacrifice this artifact: You gain 3 life.")

Tap an untapped creature you control: Tap target artifact or creature.

, : Flip a coin. If you win the flip, destroy target artifact and untap Goblin Archaeologist. If you lose the flip, sacrifice Goblin Archaeologist.

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

: Target artifact creature becomes blue until end of turn.

Tap an untapped blue creature you control: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts.

As long as Guardian Beast is untapped, noncreature artifacts you control can't be enchanted, they have indestructible, and other players can't gain control of them. This effect doesn't remove Auras already attached to those artifacts.

: Add .

, : Add one mana of any color.

, , Tap an untapped Gate you control: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

Enchant creature or planeswalker

When Hold for Questioning enters, tap enchanted permanent and investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Enchanted permanent doesn't untap during its controller's untap step and its activated abilities can't be activated.

: You may tap or untap target artifact an opponent controls.

Whenever Iceberg Titan attacks, you may tap or untap target artifact or creature.

Players can't untap more than one artifact during their untap steps.

Exploit (When this creature enters, you may sacrifice a creature.)

When Infernal Captor exploits a creature, gain control of target artifact or creature until end of turn. Untap that permanent. It gains haste until end of turn.

(As a Siege enters, choose an opponent to protect it. You and others can attack it. When it's defeated, exile it, then cast it transformed.)

When Invasion of Kamigawa enters, tap target artifact or creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Tap up to two target artifacts and/or creatures. Put two stun counters on each of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)

When Janjeet Sentry enters, you get (two energy counters).

, Pay : You may tap or untap target artifact or creature.

+1: Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

−1: Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and the rest on the bottom of your library in a random order.

−7: You get an emblem with "Tap an untapped artifact you control: This emblem deals 1 damage to any target."

, : Tap all other artifacts. They don't untap during their controllers' untap steps for as long as Kill Switch remains tapped.

Vigilance

At the beginning of your end step, untap each other artifact creature you control.

, : Create a 5/5 colorless Vehicle artifact token named Zeppelin with flying and crew 3. (It has "Tap any number of creatures you control with total power 3 or more: This Vehicle becomes an artifact creature until end of turn.")

, : Target player draws a card, then discards a card. If that player discards an artifact card this way, untap Lumengrid Augur.

Enchant artifact or creature

When Malfunction enters, tap enchanted permanent.

Enchanted permanent doesn't untap during its controller's untap step.

Maraxus of Keld's power and toughness are each equal to the number of untapped artifacts, creatures, and lands you control.

, , Tap X untapped artifacts you control: Look at the top X cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Gain control of target artifact until end of turn. Untap that artifact. It gains haste until end of turn.

Return target artifact or enchantment card from a graveyard to its owner's hand.

Conspire (As you cast this spell, you may tap two untapped creatures you control that share a color with it. When you do, copy it and you may choose a new target for the copy.)

Whenever Mobile Garrison attacks, untap another target artifact or creature you control.

Crew 2 (Tap any number of creatures you control with total power 2 or more: This Vehicle becomes an artifact creature until end of turn.)

When Myr Battlesphere enters, create four 1/1 colorless Myr artifact creature tokens.

Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.

Enchant creature you control

: Untap enchanted creature. Activate only during your turn and only once each turn.

Tap enchanted creature: Untap target artifact, creature, or land. Activate only if enchanted creature is white and untapped and only once each turn.

: Add one mana of any color.

, , Tap another untapped artifact you control: Draw a card, then discard a card.

Enchant artifact or creature

Enchanted permanent doesn't untap during its controller's untap step.

At the beginning of the upkeep of enchanted permanent's controller, that player loses 1 life.

You may choose not to untap Phyrexian Gremlins during your untap step.

: Tap target artifact. It doesn't untap during its controller's untap step for as long as Phyrexian Gremlins remains tapped.

Flying

As long as Pristine Angel is untapped, it has protection from artifacts and from each color.

Whenever you cast a spell, you may untap Pristine Angel.

Public Thoroughfare enters tapped.

When Public Thoroughfare enters, sacrifice it unless you tap an untapped artifact or land you control.

: Add one mana of any color.

Flying

When Resonance Technician enters, you may discard a card. If you do, investigate twice.

, Tap X untapped artifacts you control: Copy target instant or sorcery spell you control with mana value X. You may choose new targets for the copy.