Colorless spells you cast cost less to cast.

+1: Exile the top card of your library face down and look at it. Create a 2/2 colorless Spirit creature token. When that token leaves the battlefield, put the exiled card into your hand.

−3: Destroy target permanent that's one or more colors.

Devoid (This card has no color.)

Return target nonland permanent you don't control to its owner's hand.

Whenever you cast a colorless spell with mana value 7 or greater, you may exile Ugin's Binding from your graveyard. When you do, return each nonland permanent you don't control to its owner's hand.

When Ugin's Construct enters, sacrifice a permanent that's one or more colors.

Imprint — When Ugin's Labyrinth enters, you may exile a colorless card with mana value 7 or greater from your hand.

: Add . If a card is exiled with Ugin's Labyrinth, add instead.

: Return the exiled card to its owner's hand.

If a player would begin an extra turn, that player skips that turn instead.

If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.

Partner with Cazur, Ruthless Stalker (When this creature enters, target player may put Cazur into their hand from their library, then shuffle.)

Ukkima, Stalking Shadow can't be blocked.

When Ukkima leaves the battlefield, it deals X damage to target player and you gain X life, where X is its power.

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Trample

When Uktabi Kong enters, destroy all artifacts.

Tap two untapped Apes you control: Create a 1/1 green Ape creature token.

Uktabi Wildcats's power and toughness are each equal to the number of Forests you control.

, Sacrifice a Forest: Regenerate Uktabi Wildcats.

Devoid (This card has no color.)

Whenever you cast an Eldrazi spell, you may pay . If you do, copy all spells you control, then copy all other activated and triggered abilities you control. You may choose new targets for the copies. (Mana abilities can't be copied.)

When you cast this spell, target opponent exiles the top half of their library, rounded up.

Ward—Sacrifice two permanents.

Ulamog, the Defiler enters with a number of +1/+1 counters on it equal to the greatest mana value among cards in exile.

Ulamog has annihilator X, where X is the number of +1/+1 counters on it.

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents.)

Ulamog's Crusher attacks each combat if able.

Vigilance

Ward—Sacrifice a permanent with mana value 1 or greater.

: Create a 10/10 colorless Eldrazi creature token.

Devoid (This card has no color.)

When Ulamog's Reclaimer enters, you may put a card an opponent owns from exile into that player's graveyard. If you do, return target instant or sorcery card from your graveyard to your hand.

Target creature gets -3/-3 until end of turn. You lose 3 life.

Whenever this creature enters or transforms into Ulrich of the Krallenhorde, target creature gets +4/+4 until end of turn.

At the beginning of each upkeep, if no spells were cast last turn, transform Ulrich of the Krallenhorde.

Trample

: Target attacking Wolf or Werewolf gains indestructible until end of turn.

Living metal (During your turn, this Vehicle is also a creature.)

Haste

Formidable — Whenever Ultra Magnus attacks, attacking creatures you control gain indestructible until end of turn. If those creatures have total power 8 or greater, convert Ultra Magnus.

Squad (As an additional cost to cast this spell, you may pay any number of times. When this creature enters, create that many tokens that are copies of it.)

Other creatures you control get +1/+1.

Morbid — When Ulvenwald Bear enters, if a creature died this turn, put two +1/+1 counters on target creature.

Defender

: Add .

: Transform Ulvenwald Captive.

Whenever a nontoken creature you control dies, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Whenever you sacrifice a Clue, create a 1/1 white Human Soldier creature token.

Whenever a creature you control with toughness 4 or greater dies, draw a card.

: Regenerate Ulvenwald Primordials.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ulvenwald Primordials.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Flying

Whenever Umara Raptor or another Ally you control enters, you may put a +1/+1 counter on Umara Raptor.

Whenever you cast an instant, sorcery, or Wizard spell, Umara Wizard gains flying until end of turn.

Auras attached to permanents you control have umbra armor. (If an enchanted permanent you control would be destroyed, instead remove all damage from it and destroy an Aura attached to it.)

Choose one —

• Target player sacrifices a creature or planeswalker.

• Create a 2/1 white and black Inkling creature token with flying.

Umbris, Fear Manifest gets +1/+1 for each card your opponents own in exile.

Whenever Umbris or another Nightmare or Horror you control enters, target opponent exiles cards from the top of their library until they exile a land card.

Whenever equipped creature deals combat damage, put two charge counters on Umezawa's Jitte.

Remove a charge counter from Umezawa's Jitte: Choose one —

• Equipped creature gets +2/+2 until end of turn.

• Target creature gets -1/-1 until end of turn.

• You gain 2 life.

Equip

Enchant creature

Enchanted creature loses all abilities and is a Toy artifact creature with base power and toughness 0/2 in addition to its other types.

As long as enchanted creature is face down, it can't be turned face up.

When Unassuming Sage enters, you may pay . If you do, create a Sorcerer Role token attached to it. (Enchanted creature gets +1/+1 and has "Whenever this creature attacks, scry 1.")

: Untap another target permanent.

: Add . Spend this mana only to pay a disturb cost or cast an instant or sorcery spell.

Choose one —

• Put a +1/+1 counter on each of up to two target creatures.

• Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Entwine (Choose both if you pay the entwine cost.)

Creatures you control gain indestructible until end of turn.

Addendum — If you cast this spell during your main phase, put a +1/+1 counter on each of those creatures and they gain vigilance until end of turn.

Enchant land

Enchanted land has ": Add one mana of any color."

Sacrifice Unbridled Growth: Draw a card.

Return target creature card from your graveyard to the battlefield.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Target creature gets +1/+1 and gains double strike until end of turn. (It deals both first-strike and regular combat damage.)

Protection from white (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything white.)

Unchained Berserker gets +2/+0 as long as it's attacking.

Target creature gets +4/+4 until end of turn. If it's a Spirit, it gains trample until end of turn.

As Unclaimed Territory enters, choose a creature type.

: Add .

: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type.

Creatures your opponents control get -2/-0 until end of turn.

Draw a card.

Enchant nonbasic land

When enchanted land becomes tapped, destroy it.

Look at the top four cards of your library. You may reveal up to two instant and/or sorcery cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in any order.

Toxic 1 (Players dealt combat damage by this creature also get a poison counter.)

When Unctus's Retrofitter enters, up to one target artifact you control becomes an artifact creature with base power and toughness 4/4 for as long as Unctus's Retrofitter remains on the battlefield.

Whenever Undead Augur or another Zombie you control dies, you draw a card and you lose 1 life.

When Undead Executioner dies, you may have target creature get -2/-2 until end of turn.

: Undead Leotau gets +1/-1 until end of turn.

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)