Ulasht, the Hate Seed

Legendary Creature - Hellion Hydra

Ulasht, the Hate Seed enters the battlefield 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; or put a 1/1 green Saproling creature token onto the battlefield.

Ulvenwald Bear

Creature - Bear

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

Out chasing bears
-Kessig expression meaning "died in the woods"

Ulvenwald Mystics

Creature - Human Shaman Werewolf

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

"With this ritual, we cast aside our fragile humanity . . ."

Ulvenwald Tracker

Creature - Human Shaman

, : Target creature you control fights another target creature. (Each deals damage equal to its power to the other.)

"Peace will come to Innistrad, but only after all abominations have been dealt with, one by one."

Umara Entangler

Creature - Merfolk Rogue Ally

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

"Sea Gate is gone, the Halimar basin empty. But rebuild the seawall and give these waters time, and they will fill the basin anew."

Umara Raptor

Creature - Bird Ally

Flying

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

Messenger, weapon, friend.

Umbra Mystic

Creature - Human Wizard

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

"I have found the courage to face death-twice, if I must."

Umbra Stalker

Creature - Elemental

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.

Don't venture into the darkness, lest it decide not to let you leave.

Unblinking Bleb

Creature - Illusion

Morph (You may cast this 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. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Unbreathing Horde

Creature - Zombie

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.

Uncle Istvan

Creature - Human

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

Solitude drove the old hermit insane. Now he only keeps company with those he can catch.

Undead Alchemist

Creature - Zombie

If a Zombie you control would deal combat damage to a player, instead that player puts that many cards from the top of his or her library into his or her graveyard.

Whenever a creature card is put into an opponent's graveyard from his or her library, exile that card and put a 2/2 black Zombie creature token onto the battlefield.

Undead Executioner

Creature - Zombie

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

Heartless killer in life, brainless killer in death.

Undead Leotau

Creature - Zombie Cat

: 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.)

Undead Minotaur

Creature - Zombie Minotaur

"The work that went into creating this magnificent specimen. Horrific, deadly, well-balanced. Not all necromancers do elegant work like this."-Lestin, necromancer

Undead Slayer

Creature - Human Cleric

, : Exile target Skeleton, Vampire, or Zombie.

"My motive is not vengeance but mercy. I deliver the soulless back to their severed souls."

Undead Warchief

Creature - Zombie

Zombie spells you cast cost less to cast.

Zombie creatures you control get +2/+1.

It has the strength of seven men. In fact, it used to be seven men.

Undercity Informer

Creature - Human Rogue

, Sacrifice a creature: Target player reveals cards from the top of his or her library until he or she reveals a land card, then puts those cards into his or her graveyard.

"Scandal and slander are never welcome news. That's why I'm never the messenger."

Undercity Shade

Creature - Shade

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

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

"Officially, there's nothing under that bridge to hunt . . . Unofficially, my torchers are too terrified to go there after nightfall."
-Agrus Kos

Undergrowth Champion

Creature - Elemental

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.

Undergrowth Scavenger

Creature - Fungus Horror

Undergrowth Scavenger enters the battlefield with a number of +1/+1 counters on it equal to the number of creature cards in all graveyards.

It sees a rotting carcass as a good wine which has been aged properly.

Undertaker

Creature - Human Spellshaper

, , Discard a card: Return target creature card from your graveyard to your hand.

The weight of death is heavy but not immovable.

Underworld Cerberus

Creature - Hound

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 his or her graveyard to his or her hand.

Unliving Psychopath

Creature - Zombie Assassin

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

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

"The victim bears the marks of the ‘Ktozok Impaler'. . . but he was executed years ago!"
-Gorev Hadszak, Wojek investigator

Unruly Mob

Creature - Human

Whenever another creature you control dies, put a +1/+1 counter on Unruly Mob.

"Who says werewolves are the only ones who can hunt as a pack?"
-Kolman, elder of Gatstaf

Unstoppable Ash

Creature - Treefolk Warrior

Trample

Champion a Treefolk or Warrior (When this enters the battlefield, sacrifice it unless you exile another Treefolk or Warrior you control. When this leaves the battlefield, that card returns to the battlefield.)

Whenever a creature you control becomes blocked, it gets +0/+5 until end of turn.

Unyaro Bees

Creature - Insect

Flying

: Unyaro Bees gets +1/+1 until end of turn.

, Sacrifice Unyaro Bees: Unyaro Bees deals 2 damage to target creature or player.

With no jungle left to contain it, the "plague of daggers" spread across Dominaria.

Unyielding Krumar

Creature - Orc Warrior

: Unyielding Krumar gains first strike until end of turn.

"The man whom I call father killed the orc who sired me, offering his world and his blade in return."

Updraft Elemental

Creature - Elemental

Flying

"It slips through the smallest cracks in the mountain, emerging whole and unfettered. There is nowhere it cannot go, for what can hold back the air itself?"
-Chanyi, Ojutai monk

Urabrask the Hidden

Legendary Creature - Praetor

Creatures you control have haste.

Creatures your opponents control enter the battlefield tapped.

When the Mirran resistance arrived, the furnace dwellers looked to Urabrask for guidance. His decree stunned the others: "Let them be."

Urbis Protector

Creature - Human Cleric

When Urbis Protector enters the battlefield, put a 4/4 white Angel creature token with flying onto the battlefield.

"I hear that Boros is losing its angels to the Gateless Movement. I'm sure this comes as no surprise to you."
-Teysa, to Lazav

Urborg Syphon-Mage

Creature - Human Spellshaper

, , Discard a card: Each other player loses 2 life. You gain life equal to the life lost this way.

"I have become a gourmet of sorts. Each soul has its own distinctive flavor. The art is in inviting the right company to the feast."

Uril, the Miststalker

Legendary Creature - Beast

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Uril, the Miststalker gets +2/+2 for each Aura attached to it.

It strides through the whitecover, mists in which even gargantuans can hide.

Ursapine

Creature - Beast

: Target creature gets +1/+1 until end of turn.

A friendly ursapine means a constant supply of sharp spears. An unfriendly one means a constant supply of small holes.

Ursine Fylgja

Creature - Spirit Bear

Ursine Fylgja enters the battlefield with four healing counters on it.

Remove a healing counter from Ursine Fylgja: Prevent the next 1 damage that would be dealt to Ursine Fylgja this turn.

: Put a healing counter on Ursine Fylgja.

Uthden Troll

Creature - Troll

: Regenerate Uthden Troll.

"Oi oi oi, me gotta hurt in 'ere,
Oi oi oi, me smell a ting is near,
Gonna bosh 'n gonna nosh 'n da
hurt'll disappear."
-Traditional

Utopia Mycon

Creature - Fungus

At the beginning of your upkeep, put a spore counter on Utopia Mycon.

Remove three spore counters from Utopia Mycon: Put a 1/1 green Saproling creature token onto the battlefield.

Sacrifice a Saproling: Add one mana of any color to your mana pool.

Utopia Tree

Creature - Plant

: Add one mana of any color to your mana pool.

The fruit of this fabled tree takes on the flavor of whatever food you love most.

Utvara Hellkite

Creature - Dragon

Flying

Whenever a Dragon you control attacks, put a 6/6 red Dragon creature token with flying onto the battlefield.

The fear of dragons is as old and as powerful as the fear of death itself.

Utvara Scalper

Creature - Goblin Scout

Flying

Utvara Scalper attacks each turn if able.

He wages war wherever the wind carries him.