Ticket Turbotubes

{T}: Add one mana of any color.
{3}, {T}: You get {TK} (a ticket counter).

Mox Lotus

{T}: Add {∞}.
{100}: Add one mana of any color.

Mistvein Borderpost

You may pay {1} and return a basic land you control to its owner's hand rather than pay this spell's mana cost.
This artifact enters tapped.
{T}: Add {U} or {B}.

Azorius Signet

Plains

Celebr-8000

At the beginning of combat on your turn, roll two six-sided dice. For each result of 1, this creature gets +1/+1 until end of turn. For each other result, it gains the indicated ability until end of turn. If you rolled doubles, it also gains double strike until end of turn.
• 2 — menace
• 3 — vigilance
• 4 — lifelink
• 5 — flying
• 6 — indestructible

Hedron Archive

{T}: Add {C}{C}.
{2}, {T}, Sacrifice this artifact: Draw two cards.

Worn Powerstone

This artifact enters tapped.
{T}: Add {C}{C}.

Fluros of Myra's Marvels

As Fluros of Myra's Marvels enters, choose a number greater than 0.
Whenever you cast a spell with power, toughness, or loyalty equal to the chosen number, target artifact or creature becomes an artifact creature with base power and toughness X/X until end of turn, where X is the chosen number.
Partner

Form of the Mulldrifter

When Form of the Mulldrifter enters, draw two cards.
You may cast creature cards from your hand as though they were the card Mulldrifter. (You can still evoke this way. They're Mulldrifters.)

Dimir Signet

Microscope

{T}: Surveil 1.
{T}: Target permanent card in a graveyard becomes a 0/0 black Germ creature in addition to its other colors and types until end of turn. (This effect ends if it leaves the graveyard.)

Island

Mirrored Lotus

Reflect {0} (As this enters, each opponent may pay {0}. When they do, they create a token copy of this except it lacks this ability.)
{T}, Exile Mirrored Lotus: Add three mana of any one color.

Spatula of the Ages

{4}, {T}, Sacrifice this artifact: You may put a silver-bordered or acorn permanent card from your hand onto the battlefield.

Double Take

Choose another player. You draw two cards. At the beginning of the first upkeep in your next game with that player, you draw two cards.

Greater Morphling

{2}: This creature gains your choice of banding, bushido 1, double strike, fear, flying, first strike, haste, landwalk of your choice, protection from a color of your choice, provoke, rampage 1, shadow, or trample until end of turn.
{2}: This creature becomes the colors of your choice until end of turn.
{2}: This creature becomes the creature type of your choice until end of turn.
{2}: This creature's expansion symbol becomes the symbol of your choice until end of turn.
{2}: This creature's art becomes by the artist of your choice until end of turn.
{2}: This creature gets +2/-2 or -2/+2 until end of turn.
{2}: Untap this creature.

Fowl Play

Enchant creature
Enchanted creature loses all abilities and is a Bird creature with base power and toughness 1/1.

Sydri, Galvanic Genius

{U}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.
{W}{B}: Target artifact creature gains deathtouch and lifelink until end of turn.

Thran Dynamo

Gleemax

You choose all targets for all spells and abilities.

Swamp

Blacker Lotus

{T}: Tear this artifact into pieces. Add four mana of any one color. Remove the pieces from the game.

Richard Garfield, Ph.D.

You may play cards as though they were other cards of your choice with the same mana cost. You can't choose the same card twice. (Mana cost includes color.)

Narod, the Beige Flower

Each creature assigns combat damage equal to its mana value rather than its power.

Fieldmist Borderpost

You may pay {1} and return a basic land you control to its owner's hand rather than pay this spell's mana cost.
This artifact enters tapped.
{T}: Add {W} or {U}.

Sol Ring

Arcane Signet

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

Orzhov Signet

Squidnapper

When Squidnapper enters, gain control of target creature an opponent controls until Squidnapper leaves the battlefield or that player pays the ransom.
Ransom — {6} and 2 life

Lantern of Undersight

You draw cards from the bottom of your library instead of the top of your library.

Decisions, Decisions

Reveal the top three cards of your library, then choose a consonant. (Y counts.) Put each card that has the chosen letter in the first word of its name from among them into your hand and the rest on the bottom of your library in any order.