You may pay rather than pay the echo cost for permanents you control.

: Thick-Skinned Goblin gains protection from red until end of turn.

Exile all nontoken permanents. Starting with you, each player chooses one of the exiled cards and puts it onto the battlefield tapped under their control. Repeat this process until all cards exiled this way have been chosen.

Defender

Thing in the Ice enters with four ice counters on it.

Whenever you cast an instant or sorcery spell, remove an ice counter from Thing in the Ice. Then if it has no ice counters on it, transform it.

Equipped creature gets +1/+2.

Equip Detective

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Draw three cards. Then discard two cards unless you discard a basic land card.

Whenever you draw your second card each turn, put a +1/+1 counter on Thopter Mechanic.

When Thopter Mechanic dies, create a 1/1 colorless Thopter artifact creature token with flying.

Whenever Thornbow Archer attacks, each opponent who doesn't control an Elf loses 1 life.

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

Thorned Moloch has first strike as long as it's attacking.

Kicker and/or (You may pay an additional and/or as you cast this spell.)

When Thornscape Battlemage enters, if it was kicked with its kicker, it deals 2 damage to any target.

When Thornscape Battlemage enters, if it was kicked with its kicker, destroy target artifact.

, : Thornscape Master deals 2 damage to target creature.

, : Target creature gains protection from the color of your choice until end of turn.

Thornwatch Scarecrow has wither as long as you control a green creature. (It deals damage to creatures in the form of -1/-1 counters.)

Thornwatch Scarecrow has vigilance as long as you control a white creature.

Counter target spell. Its controller mills three cards.

, : Target opponent reveals cards from the top of their library until an artifact card or X cards are revealed, whichever comes first. If an artifact card is revealed this way, put it onto the battlefield under your control and sacrifice Thought Dissector. Put the rest of the revealed cards into that player's graveyard.

Target player mills two cards.

Draw a card.

Flying

At the beginning of your upkeep, if a player controls more Wizards than each other player, the player who controls the most Wizards gains control of Thoughtbound Primoc.

, : Target player loses 1 life and reveals their hand.

Whenever an Island an opponent controls becomes tapped, you may gain 1 life.

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

When Thought-Stalker Warlock enters, choose target opponent. If they lost life this turn, they reveal their hand, you choose a nonland card from it, and they discard that card. Otherwise, they discard a card.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Flying

When Thousand-Faced Shadow enters from your hand, if it's attacking, create a token that's a copy of another target attacking creature. The token enters tapped and attacking.

Exile target Spirit, creature with disturb, or enchantment.

When Thraben Inspector enters, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

Trample

Whenever Thrakkus the Butcher attacks, double the power of each Dragon you control until end of turn.

Flying

Search your library for up to four creature cards with different powers and reveal them. An opponent chooses two of those cards. Shuffle the chosen cards into your library and put the rest into your hand.

As Three Tree City enters, choose a creature type.

: Add .

, : Choose a color. Add an amount of mana of that color equal to the number of creatures you control of the chosen type.

Whenever Three Tree Scribe or another creature you control leaves the battlefield without dying, put a +1/+1 counter on target creature you control.

Put onto the battlefield under your control all creature cards in all graveyards that were put there from the battlefield this turn.

Flying

When Thriving Skyclaw enters, you get (three energy counters).

Whenever Thriving Skyclaw attacks, you may pay . If you do, put a +1/+1 counter on it.

: Mill two cards.

Craft with a Dinosaur, a Merfolk, a Pirate, and a Vampire (, Exile this artifact, Exile the four from among permanents you control and/or cards in your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)

You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice that creature at the beginning of the next end step.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

This spell can't be countered.

Trample

Thrun, Breaker of Silence can't be the target of nongreen spells your opponents control or abilities from nongreen sources your opponents control.

During your turn, Thrun has indestructible.

Thunderblade Charge deals 3 damage to any target.

Whenever one or more creatures you control deal combat damage to a player, if Thunderblade Charge is in your graveyard, you may pay . If you do, you may cast it without paying its mana cost.

Flying

Instant and sorcery spells you cast cost less to cast.

, Sacrifice Thunderclap Drake: When you next cast an instant or sorcery spell this turn, copy it for each time you've cast your commander from the command zone this game. You may choose new targets for the copies.

Flying

: Tap all creatures with toughness 2 or less.

: All other creatures lose flying until end of turn.

Trample

When Thundering Ceratok enters, other creatures you control gain trample until end of turn.

Other Dinosaurs you control get +1/+1.

: Create a 3/3 green Dinosaur creature token with trample.

Kicker and/or (You may pay an additional and/or as you cast this spell.)

When Thunderscape Battlemage enters, if it was kicked with its kicker, target player discards two cards.

When Thunderscape Battlemage enters, if it was kicked with its kicker, destroy target enchantment.

, : Target player loses 2 life and you gain 2 life.

, : Creatures you control get +2/+2 until end of turn.

First strike

Crushing Teeth — Whenever Thunderwolf Cavalry deals combat damage to a player, put a +1/+1 counter on each other creature you control.

Flying, first strike

Whenever an Aura or Equipment you control is put into a graveyard from the battlefield, you may return that card to its owner's hand at the beginning of the next end step.

As Tibalt enters, you get an emblem with "You may play cards exiled with Tibalt, Cosmic Impostor, and you may spend mana as though it were mana of any color to cast those spells."

+2: Exile the top card of each player's library.

−3: Exile target artifact or creature.

−8: Exile all graveyards. Add .

Counter target spell. Choose 1, 2, or 3 at random. Its controller mills that many cards, then exiles cards from the top of their library until they exile a nonland card with a different name than that spell. They may cast that card without paying its mana cost. Then they put the exiled cards on the bottom of their library in a random order.

: Add one mana of any color.

, : You get (a ticket counter).

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.)

Sacrifice Ticking Gnomes: It deals 1 damage to any target.

Any player may cast spells as though they had flash.

Your opponents can't cast spells during your turn.

When Tidal Courier enters, reveal the top four cards of your library. Put all Merfolk cards revealed this way into your hand and the rest on the bottom of your library in any order.

: Tidal Courier gains flying until end of turn.

Cast this spell only if no permanents named Tidal Influence are on the battlefield.

Tidal Influence enters with a tide counter on it.

At the beginning of your upkeep, put a tide counter on Tidal Influence.

As long as there is exactly one tide counter on Tidal Influence, all blue creatures get -2/-0.

As long as there are exactly three tide counters on Tidal Influence, all blue creatures get +2/+0.

Whenever there are four or more tide counters on Tidal Influence, remove all tide counters from it.

: Add .

When Tidehollow Sculler enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.

When Tidehollow Sculler leaves the battlefield, return the exiled card to its owner's hand.

Destroy target creature. You gain 1 life for each artifact you control.