Flying (This creature can't be blocked except by creatures with flying or reach.)

Whenever Trusted Pegasus attacks, target attacking creature without flying gains flying until end of turn.

Subterranean Assault — Whenever Trygon Prime attacks, put a +1/+1 counter on it and a +1/+1 counter on up to one other target attacking creature. That creature can't be blocked this turn.

Flying

Celebration — Tuinvale Guide gets +1/+0 and has lifelink as long as two or more nonland permanents entered the battlefield under your control this turn.

Haste

Whenever Tuktuk Grunts or another Ally you control enters, you may put a +1/+1 counter on Tuktuk Grunts.

Tumble Magnet enters with three charge counters on it.

, Remove a charge counter from Tumble Magnet: Tap target artifact or creature.

Whenever a land enters under an opponent's control, if that player had another land enter the battlefield under their control this turn, Tunnel Ignus deals 3 damage to that player.

Flying

Whenever you cast an instant or sorcery spell, create a 1/1 white Soldier creature token.

Devoid (This card has no color.)

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Turn to Slag deals 5 damage to target creature. Destroy all Equipment attached to that creature.

Whenever Turntimber Ranger or another Ally you control enters, you may create a 2/2 green Wolf creature token. If you do, put a +1/+1 counter on Turntimber Ranger.

Changeling (This card is every creature type.)

: Switch Turtleshell Changeling's power and toughness until end of turn.

Target creature gains double strike until end of turn. (Then exile this card. You may cast the creature later from exile.)

Whenever you crank Twiddlestick Charger, tap or untap target creature.

Whenever a creature token leaves the battlefield, put a +1/+1 counter on Twilight Drover.

, Remove a +1/+1 counter from Twilight Drover: Create two 1/1 white Spirit creature tokens with flying.

: Twilight Panther gains deathtouch until end of turn.

Flying, vigilance

When Twilight Shepherd enters, return to your hand all cards in your graveyard that were put there from the battlefield this turn.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Double strike

Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

, : You may cast a spell from your hand without paying its mana cost if it has the same name as a spell that was cast this turn.

You and target opponent each gain control of all creatures the other controls until end of turn. Untap those creatures. Those creatures gain haste until end of turn.

: Add one mana of any color. Put a nest counter on Twitching Doll.

, Sacrifice Twitching Doll: Create a 2/2 green Spider creature token with reach for each counter on Twitching Doll. Activate only as a sorcery.

Flying

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

Two-Headed Dragon can block an additional creature each combat.

: Two-Headed Dragon gets +2/+0 until end of turn.

Trample

Two-Headed Giant of Foriys can block an additional creature each combat.

, Sacrifice another creature: Tymaret, the Murder King deals 2 damage to target player or planeswalker.

, Sacrifice a creature: Return Tymaret from your graveyard to your hand.

Flying

When Tyrant of Kher Ridges enters, it deals 4 damage to any target.

: Tyrant of Kher Ridges gets +1/+0 until end of 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.)

+2: Ugin, the Spirit Dragon deals 3 damage to any target.

−X: Exile each permanent with mana value X or less that's one or more colors.

−10: You gain 7 life, draw seven cards, then put up to seven permanent cards from your hand onto the battlefield.

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.

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

Whenever you cast a colorless creature spell, manifest the top card of your library. (Put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Whenever you attack with creatures with total power 6 or greater, you may turn a face-down creature you control face up.

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.

Trample

When Uktabi Kong enters, destroy all artifacts.

Tap two untapped Apes you control: Create a 1/1 green Ape creature token.

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.

When Ulder Ravengard, Marshal enters the battlefield, another target nontoken creature you control gains double team until end of turn.

Whenever Ulder Ravengard attacks, conjure a duplicate of another target nontoken attacking creature into your hand.

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.

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

When Unassuming Sage enters, 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.")

: Add . Spend this mana only to pay a disturb cost or cast an instant or sorcery spell.

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.

Search your library for up to X creature cards with different names that each have mana value X, reveal them, put them into your hand, then shuffle.

Target creature gets +4/+4 until end of turn. If it's a Spirit, it gains trample until end of turn.

Other blue creatures you control have "Whenever this creature becomes tapped, draw a card, then discard a card."

Other artifact creatures you control get +1/+1.

: Until end of turn, target creature you control becomes a blue artifact in addition to its other colors and types. Activate only as a sorcery. ( can be paid with either or 2 life.)

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

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

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

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.)

: Add .

: Add or . Underground River deals 1 damage to you.

As an additional cost to cast this spell, you may pay .

Prevent all combat damage that would be dealt this turn. If this spell's additional cost was paid, this effect doesn't affect combat damage that would be dealt by red creatures.