You may activate abilities of creatures you control as though those creatures had haste.

+1: Untap up to one target creature.

−2: Mill three cards, then you may return a creature card with mana value 2 or less from your graveyard to the battlefield.

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.

Ugin's Conjurant enters the battlefield with X +1/+1 counters on it.

If damage would be dealt to Ugin's Conjurant while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from Ugin's Conjurant.

Scry X, where X is the highest mana value among permanents you control, then draw three cards.

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 the battlefield, 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 the battlefield, 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.

As Ulamog's Despoiler enters the battlefield, you may put two cards your opponents own from exile into their owners' graveyards. If you do, Ulamog's Despoiler enters the battlefield with four +1/+1 counters on it.

Devoid (This card has no color.)

When Ulamog's Reclaimer enters the battlefield, 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.

Whenever this creature transforms into Ulrich, Uncontested Alpha, you may have it fight target non-Werewolf creature you don't control.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Ulrich, Uncontested Alpha.

Destroy target monocolored creature.

More Than Meets the Eye (You may cast this card converted for .)

Ward

Whenever Ultra Magnus attacks, you may put an artifact creature card from your hand onto the battlefield tapped and attacking. If you do, convert Ultra Magnus at end of combat.

: Add .

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.

Trample, haste

: Transform Ulvenwald Oddity.

Flying

Whenever you cast an instant, sorcery, or Wizard spell, Umara Mystic gets +2/+0 until end of turn.

At the beginning of each player's upkeep, that player may pay 2 life. If they don't, they return a permanent they control to its owner's hand.

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

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

Companion — Each nonland card in your starting deck shares a card type. (If this card is your chosen companion, you may put it into your hand from outside the game for as a sorcery.)

As Umori, the Collector enters the battlefield, choose a card type.

Spells you cast of the chosen type cost less to cast.

When Unassuming Sage enters the battlefield, 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.)

Unbreathing Horde enters the battlefield with a +1/+1 counter on it for each other Zombie you control and each Zombie card in your graveyard.

If Unbreathing Horde would be dealt damage, prevent that damage and remove a +1/+1 counter from it.

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.)

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.

As Unclaimed Territory enters the battlefield, 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.

Target creature gets +3/+3 and gains flying until end of turn.

Whenever a Zombie enters the battlefield under your control, you may pay . If you do, return Unconventional Tactics from your graveyard to your hand.

If a Zombie you control would deal combat damage to a player, instead that player mills that many cards.

Whenever a creature card is put into an opponent's graveyard from their library, exile that card and create a 2/2 black Zombie creature token.

, Discard a card: Return Undead Gladiator from your graveyard to your hand. Activate only during your upkeep.

Cycling (, Discard this card: Draw a card.)

Zombie spells you cast cost less to cast.

Zombie creatures you control get +2/+1.

You can't enter this dungeon unless you "venture into Undercity."

Secret Entrance — Search your library for a basic land card, reveal it, put it into your hand, then shuffle. (Forge, Lost Well)

Forge — Put two +1/+1 counters on target creature. (Trap, Arena)

Lost Well — Scry 2. (Arena, Stash)

Trap — Target player loses 5 life. (Archives)

Arena — Goad target creature. (Archives, Catacombs)

Stash — Create a Treasure token. (Catacombs)

Archives — Draw a card. (Throne of the Dead Three)

Catacombs — Create a 4/1 black Skeleton creature token with menace. (Throne of the Dead Three)

Throne of the Dead Three — Reveal the top ten cards of your library. Put a creature card from among them onto the battlefield with three +1/+1 counters on it. It gains hexproof until your next turn. Then shuffle.

, Sacrifice a creature: Target player reveals cards from the top of their library until they reveal a land card, then puts those cards into their graveyard.

Target player loses 1 life, discards a card, then sacrifices a permanent.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

When Undercity Scavenger enters the battlefield, you may sacrifice another creature. If you do, put two +1/+1 counters on Undercity Scavenger, then scry 2.

(: Add or .)

Undercity Sewers enters the battlefield tapped.

When Undercity Sewers enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

: Regenerate Undercity Troll. (The next time this creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)

Creatures you control gain deathtouch until end of turn. Then target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.)

You may have Undercover Operative enter the battlefield as a copy of any creature on the battlefield, except it enters with a shield counter on it if you control that creature. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)

: Add .

, , Exile Underdark Rift: Roll a d10. Put target artifact, creature, or planeswalker into its owner's library just beneath the top X cards of that library, where X is the result. Activate only as a sorcery.

If damage would be dealt to Undergrowth Champion while it has a +1/+1 counter on it, prevent that damage and remove a +1/+1 counter from Undergrowth Champion.

Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Undergrowth Champion.

Whenever an artifact enters the battlefield under your control, you may pay . If you do, each opponent loses 1 life and you gain 1 life.

, Sacrifice Underhanded Designs: Destroy target creature. Activate only if you control two or more artifacts.

Vigilance

When Undermountain Adventurer enters the battlefield, you take the initiative.

: Add . If you've completed a dungeon, add six instead.

Flash

Undersea Invader enters the battlefield tapped.

Constellation — Whenever Underworld Coinsmith or another enchantment enters the battlefield under your control, you gain 1 life.

, Pay 1 life: Each opponent loses 1 life.

Underworld Fires deals 1 damage to each creature and each planeswalker. If a permanent dealt damage this way would die this turn, exile it instead.

Whenever Underworld Sentinel attacks, exile target creature card from your graveyard.

When Underworld Sentinel dies, put all cards exiled with it onto the battlefield.