Flying, ward

Shrieking Gargoyles — Whenever Tyranid Harridan or another Tyranid you control deals combat damage to a player, create a 1/1 blue Tyranid Gargoyle creature token with flying.

Flying, trample

As Tyrannical Pitlord enters, choose another creature you control.

The chosen creature gets +3/+3 and has flying.

When Tyrannical Pitlord leaves the battlefield, sacrifice the chosen creature.

When Tyrant of Discord enters, target opponent chooses a permanent they control at random and sacrifices it. If a nonland permanent is sacrificed this way, repeat this process.

Surge (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)

Flying

When Tyrant of Valakut enters, if its surge cost was paid, it deals 3 damage to any target.

: Tyrranax gets -1/+1 until end of turn.

This spell can't be countered.

Trample, ward , haste

Toxic 4 (Players dealt combat damage by this creature also get four poison counters.)

Whenever one or more Elves you control attack, they gain deathtouch until end of turn.

Each creature you control has "Whenever a mana ability of this creature resolves, put a number of +1/+1 counters on it equal to the amount of mana this creature produced. This ability triggers only once each turn."

Flying

Sorcerous Elixir — Whenever Tzaangor Shaman deals combat damage to a player, copy the next instant or sorcery spell you cast this turn when you cast it. You may choose new targets for the copy.

Vigilance, menace

Descend 8 — : Return Uchbenbak, the Great Mistake from your graveyard to the battlefield with a finality counter on it. Activate only if there are eight or more permanent cards in your graveyard and only as a sorcery. (If a creature with a finality counter on it would die, exile it instead.)

Ugin's Conjurant enters 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.

Whenever another creature you control dies, put a +1/+1 counter on Uglúk of the White Hand. If that creature was a Goblin or Orc, put two +1/+1 counters on Uglúk instead.

Flying, haste

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Flying

, Sacrifice Uktabi Faerie: Destroy target artifact.

When Uktabi Orangutan enters, destroy target artifact.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

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 of their choice.)

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.

Whenever 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.