mtg.wtf

{1}{W}: Target attacking Zombie gains lifelink until end of turn.
{1}{B}: Target attacking Zombie gains deathtouch until end of turn.

Defender
{T}: Unruly Catapult deals 1 damage to each opponent.
Whenever you cast an instant or sorcery spell, untap Unruly Catapult.

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.
{3}{G}{U}: Adapt 3.

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

{TK}{TK} — Whenever this creature attacks, bolster 1.
{TK}{TK}{TK}{TK} — Indestructible
{TK}{TK} — 3/2
{TK}{TK}{TK} — 5/4

When Unscrupulous Agent enters, target opponent exiles a card from their hand.

When Unscrupulous Contractor enters, you may sacrifice a creature. When you do, target player draws two cards and loses 2 life.
Plot {2}{B}

Equipped creature gets +3/+3 and has first strike.
Whenever a creature dealt damage by equipped creature this turn dies, you may exile that card. If you do, create a 2/2 black Zombie creature token.
Equip {2}

Forestwalk
{1}{G}{G}: Target creature gains forestwalk until end of turn.

Changeling
Whenever you or a permanent you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {1}.

When Unsettling Twins enters, manifest dread.

When Unshakable Tail enters and at the beginning of your upkeep, surveil 1.
Whenever one or more creature cards are put into your graveyard from your library, investigate.
{2}, Sacrifice a Clue: Return Unshakable Tail from your graveyard to your hand.

Pay 3 life: Put a +1/+1 counter on target creature.

When Unstable Amulet enters, you get {E}{E}.
Whenever you cast a spell from anywhere other than your hand, Unstable Amulet deals 1 damage to each opponent.
{T}, Pay {E}{E}: Exile the top card of your library. You may play it until you exile another card with Unstable Amulet.

{T}: Add {C}.
{T}: Target land you control becomes the basic land type of your choice until end of turn.

When Unstable Glyphbridge enters, if you cast it, for each player, choose a creature with power 2 or less that player controls. Then destroy all creatures except creatures chosen this way.
Craft with artifact {3}{W}{W}

Morph {3}{R}{R}
When Unstable Hulk is turned face up, it gets +6/+6 and gains trample until end of turn. You skip your next turn.

Enchant creature
Enchanted creature gets +3/+3.
At the beginning of the upkeep of enchanted creature's controller, put a -1/-1 counter on that creature.

{T}: Add {C}.
{7}, {T}, Sacrifice Unstable Obelisk: Destroy target permanent.

{TK}{TK} — {1}: Switch this creature's power and toughness until end of turn.
{TK}{TK}{TK}{TK} — Whenever this creature attacks, it gets +5/+5 until end of turn.
{TK}{TK} — 3/2
{TK}{TK}{TK} — 2/7

Whenever another creature enters, Unstable Shapeshifter becomes a copy of that creature, except it has this ability.

Trample
Champion a Treefolk or Warrior
Whenever a creature you control becomes blocked, it gets +0/+5 until end of turn.

When Unstoppable Ogre enters, target creature can't block this turn.

Deathtouch
Whenever Unstoppable Slasher deals combat damage to a player, they lose half their life, rounded up.
When Unstoppable Slasher dies, if it had no counters on it, return it to the battlefield tapped under its owner's control with two stun counters on it.

Untaidake, the Cloud Keeper enters tapped.
{T}, Pay 2 life: Add {C}{C}. Spend this mana only to cast legendary spells.