Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep. You draw a card at the beginning of the next turn's upkeep.

Choose one — • Counter target spell. • Target player draws two cards. • Gain control of target nonland permanent with mana value 1 or less.

Counter target spell.

Return each nonland permanent that's not historic to its owner's hand. (Artifacts, legendaries, and Sagas are historic.)

If you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.

Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard. Create a 0/0 colorless Thopter artifact creature token with flying, then put a +1/+1 counter on it for each card put into your graveyard this way.

Counter target creature or planeswalker spell. Create a 1/1 colorless Thopter artifact creature token with flying.

Choose one — • Return all creature tokens to their owners' hands. • Return all nontoken creatures to their owners' hands.

Destroy target creature. It can't be regenerated. Its controller creates a 3/3 green Ape creature token.

Destroy target creature. It can't be regenerated. That creature's controller creates a 3/3 green Frog Lizard creature token.

If you would gain life, you gain twice that much life instead. If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

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

Whenever a creature you control deals combat damage to a player, you may draw a card. {1}{U}, {T}: Creatures your opponents control attack this turn if able.

As this artifact enters, choose a color. Creatures you control of the chosen color get +1/+1. Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

Spells you control can't be countered. At the beginning of your end step, discover 5. (Exile cards from the top of your library until you exile a nonland card with mana value 5 or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Colorless creatures you control get +2/+2. Whenever you tap a permanent for {C}, add an additional {C}. Whenever you cast a colorless spell, you gain 2 life.

{T}: Add three mana of any one color.

Spells your opponents cast cost {2} more to cast. At the beginning of your end step, each opponent loses 1 life.

Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy. Equip {3}

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

Whenever you discard a card, choose one that hasn't been chosen this turn — • Draw a card. • Create a Treasure token. • Each opponent loses 3 life.

At the beginning of combat on your turn, draw a card. Then you may exile an artifact or creature card from your hand. If you do, create a token that's a copy of the exiled card, except it's a 3/3 Golem artifact creature in addition to its other types.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As this artifact enters, choose a creature type. Creatures you control of the chosen type get +2/+2.

{T}: Add one mana of any color. {1}, {T}: Untap target legendary creature you control.

{T}: Add one mana of any color. {T}: Add three mana of any one color. Activate only if you control three or more lands with the same name.

When this artifact enters, scry 2. Whenever another artifact you control with mana value 3 or greater enters, create a 0/0 colorless Construct artifact creature token with "This token gets +1/+1 for each artifact you control."

{T}: Add {C}{C}.

At the beginning of your upkeep, draw a card. {T}: This artifact deals 1 damage to any target.

Equipped creature gets +1/+1 and has haste. At the beginning of each combat, untap equipped creature. Equipped creature has first strike as long as it's blocking or blocked by a Goblin or Orc. Equip {2}

Players can't activate planeswalkers' loyalty abilities. At the beginning of your draw step, draw an additional card. Spells you cast cost {1} less to cast. Creatures you control get +1/+1.

This spell costs {1} less to cast for each instant and sorcery card in your graveyard. You have no maximum hand size. At the beginning of your upkeep, put a knowledge counter on The Magic Mirror, then draw a card for each knowledge counter on The Magic Mirror.

You have no maximum hand size. {T}: Add {C}.

{T}: Add {C}{C}{C}.

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

This land enters tapped unless you control an Island. {T}: Add {U}. {U}, {T}: The next spell you cast this turn has improvise. (Your artifacts can help cast that spell. Each artifact you tap after you're done activating mana abilities pays for {1}.)

Indestructible {T}: Add {C}.

({T}: Add {U}.)

You have no maximum hand size. {T}: Add {C}.

{T}: Add {U}.

You may have this creature enter as a copy of any creature on the battlefield, except it isn't legendary, is an artifact in addition to its other types, and has myriad. (Whenever it attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Nonlegendary artifact creatures you control have myriad. (Whenever a creature with myriad attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

When this creature enters, you may pay {1}. When you do, create a token that's a copy of target token you control not named Dutiful Replicator.

Juggernauts you control attack each combat if able. Juggernauts you control can't be blocked by Walls. Other creatures you control have base power and toughness 5/3 and are Juggernauts in addition to their other creature types.

Improvise (Your artifacts can help cast this spell. Each artifact you tap after you're done activating mana abilities pays for {1}.) Ward {4} Whenever this creature or another artifact you control enters, put a +1/+1 counter on this creature and it can't be blocked this turn.

Karn's power and toughness are each equal to the greatest mana value among artifacts you control. At the beginning of your upkeep, add {C} for each artifact you control. This mana can't be spent to cast nonartifact spells. Until end of turn, you don't lose this mana as steps and phases end.

Flash Flying You may cast colorless spells and artifact spells as though they had flash. Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than Liberator's power, put a +1/+1 counter on Liberator.

Master of Etherium's power and toughness are each equal to the number of artifacts you control. Other artifact creatures you control get +1/+1.

As this creature enters, choose a creature type. This creature is the chosen type in addition to its other types. Each other creature you control of the chosen type enters with an additional +1/+1 counter on it.

When this creature enters, destroy target nonland permanent an opponent controls.

When this creature enters, create four 1/1 colorless Myr artifact creature tokens. Whenever this creature attacks, you may tap X untapped Myr you control. If you do, this creature gets +X/+0 until end of turn and deals X damage to the player or planeswalker it's attacking.

Artifacts you control have hexproof. (They can't be the targets of spells or abilities your opponents control.) At the beginning of your upkeep, if you control the artifact with the highest mana value or tied for the highest mana value, draw a card.

Flying You can't lose the game and your opponents can't win the game.

Flash Flying Whenever an artifact creature you control deals combat damage to a player, draw a card.

Flying Whenever an artifact creature you control deals combat damage to a player, you may create a 1/1 blue Thopter artifact creature token with flying.

{T}: Put a +1/+1 counter on each artifact creature you control.

Defender (This creature can't attack.) {4}: This creature loses defender until end of turn. {T}: Untap target permanent.

As this enchantment enters, choose a creature type. Whenever a creature you control of the chosen type enters or attacks, draw a card.

When Proft's Eidetic Memory enters, draw a card. You have no maximum hand size. At the beginning of combat on your turn, if you've drawn more than one card this turn, put X +1/+1 counters on target creature you control, where X is the number of cards you've drawn this turn minus one.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.

At the beginning of your upkeep, if you control an artifact, create a 1/1 colorless Thopter artifact creature token with flying. Whenever one or more artifact creatures you control deal combat damage to a player, draw a card.