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.

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.)

Tap two untapped artifacts you control: Untap target artifact.

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.

As an additional cost to cast this spell, tap an untapped artifact you control or pay .

Counter target spell.

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

, 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.

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.)

Flash

, : Untap target artifact.

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.

Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn.

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

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."

Inspired — Whenever King Macar, the Gold-Cursed becomes untapped, you may exile target creature. If you do, create a Gold token. (It's an artifact with "Sacrifice this artifact: Add one mana of any color.")

, : Untap target artifact an opponent controls and gain control of it until end of turn. It gains haste until end of turn. When you lose control of the artifact, tap it.

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.)

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.

Tap four untapped creatures you control: Destroy target artifact or enchantment.

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.

Target artifact, creature, or land phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

You may choose not to untap Rust Tick during your untap step.

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

Gain control of target artifact or creature until end of turn. Untap it. It gains haste until end of turn. Create a tapped Powerstone token. (It's an artifact with ": Add . This mana can't be spent to cast a nonartifact spell.")

: Add one mana of any color.

, : Untap another target artifact.

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

, : Target creature can't be blocked this turn.

, : Tap X target noncreature artifacts.

, : Untap X target noncreature artifacts.

Vigilance

, : Put a +1/+1 counter on target creature.

Tap two untapped tokens you control: Tangle Tumbler becomes an artifact creature until end of turn.

+2: Untap up to one target artifact or creature.

−3: You gain 2 life and draw two cards.

−9: Take an extra turn after this one.

+1: Untap up to two target artifacts.

−X: Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.

−5: Artifacts you control become artifact creatures with base power and toughness 5/5 until end of turn.

, , Discard a card: You may tap or untap target artifact, creature, or land.

You may tap or untap target artifact, creature, or land.

Choose one —

• Target player mills four cards.

• Choose a land type and a basic land type. Each land of the first chosen type becomes the second chosen type until end of turn.

• Target artifact phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

, : Untap target artifact.

Inspired — Whenever Warchanter of Mogis becomes untapped, target creature you control gains intimidate until end of turn. (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)

When Whirler Rogue enters, create two 1/1 colorless Thopter artifact creature tokens with flying.

Tap two untapped artifacts you control: Target creature can't be blocked this turn.

Vigilance, reach, trample

When Zacama, Primal Calamity enters, if you cast it, untap all lands you control.

: Zacama deals 3 damage to target creature.

: Destroy target artifact or enchantment.

: You gain 3 life.