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.)

When Uktabi Orangutan enters, destroy target artifact.

Deathtouch

When you cast this spell, exile two target permanents.

Indestructible

Whenever Ulamog, the Ceaseless Hunger attacks, defending player exiles the top twenty cards of their library.

When you cast this spell, destroy target permanent.

Indestructible

Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)

When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

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

Devoid (This card has no color.)

Flash

Flying

When Ulamog's Nullifier enters, you may put two cards your opponents own from exile into their owners' graveyards. If you do, counter target spell.

Ulasht, the Hate Seed enters with a +1/+1 counter on it for each other red creature you control and a +1/+1 counter on it for each other green creature you control.

, Remove a +1/+1 counter from Ulasht: Choose one —

• Ulasht deals 1 damage to target creature.

• Create a 1/1 green Saproling creature token.

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.

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.

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

Trample, haste

: Transform Ulvenwald Oddity.

, : Target creature you control fights another target creature.

Flying

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

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

Chroma — Umbra Stalker's power and toughness are each equal to the number of black mana symbols in the mana costs of cards in your graveyard.

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, choose a card type.

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

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

Whenever Unblinking Bleb or another permanent is turned face up, you may scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Unbreathing Horde enters 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.

Prevent all damage that would be dealt to Uncle Istvan by creatures.

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.)

When Undead Servant enters, create a 2/2 black Zombie creature token for each card named Undead Servant in your graveyard.

Trample, haste

You may cast Undead Sprinter from your graveyard if a non-Zombie creature died this turn. If you do, Undead Sprinter enters with a +1/+1 counter on it.

When Undercellar Myconid enters or dies, create a 1/1 green Saproling creature token.

: Add one mana of any color.

, 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.

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

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

: Undercity Shade gets +1/+1 until end of turn.

Whenever Undercover Butler attacks the player with the most life or tied for most life, it can't be blocked this turn.

You may have Undercover Operative enter 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.)

CARDNAME enters the battlefield with ten eyestalk counters on it.

If CARDNAME would be dealt damage, remove that many eyestalk counters from it instead. If you can't, sacrifice it.

Whenever CARDNAME attacks, reveal cards from the top of your library until you reveal an instant, sorcery, or enchantment card with converted mana cost less than the number of eyestalk counters on CARDNAME. You may cast it without paying its mana cost. Shuffle your library.

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 you control enters, put a +1/+1 counter on Undergrowth Champion.

Vigilance

When Undermountain Adventurer enters, you take the initiative.

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

Flash

Undersea Invader enters tapped.

Underworld Cerberus can't be blocked except by three or more creatures.

Cards in graveyards can't be the targets of spells or abilities.

When Underworld Cerberus dies, exile it and each player returns all creature cards from their graveyard to their hand.

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

, Pay 1 life: Each opponent loses 1 life.

Underworld Rage-Hound attacks each combat if able.

Escape—, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Underworld Rage-Hound escapes with a +1/+1 counter on it.

When Undying Beast dies, put it on top of its owner's library.

Menace (This creature can't be blocked except by two or more creatures.)

Whenever Unforgiving One attacks, return target creature card with mana value X or less from your graveyard to the battlefield, where X is the number of modified creatures you control. (Equipment, Auras you control, and counters are modifications.)

Unhallowed Phalanx enters tapped.

Vigilance

: Put a +1/+1 counter on Unholy Officiant.

Skulk (This creature can't be blocked by creatures with greater power.)

When Uninvited Geist deals combat damage to a player, transform it.

: Unliving Psychopath gets +1/-1 until end of turn.

, : Destroy target creature with power less than Unliving Psychopath's power.

: Target attacking Zombie gains lifelink until end of turn.

: Target attacking Zombie gains deathtouch until end of turn.

Trample

Whenever Unruly Krasis attacks, you may have the base power and toughness of another target creature you control become X/X until end of turn, where X is Unruly Krasis's power.

: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.)