At the beginning of each end step, put a slime counter on each creature you don't control.

Creatures you don't control get -1/-1 for each slime counter on them.

Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token.

, Sacrifice a Slug: Draw a card.

Whenever you cast an instant or sorcery spell, investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

: Destroy all other enchantments.

Target opponent reveals their hand. You may choose a creature or battle card from it. If you do, that player discards that card. If you don't, incubate 3. (Create an Incubator token with three +1/+1 counters on it and ": Transform this artifact." It transforms into a 0/0 Phyrexian artifact creature.)

Put a +1/+1 counter on each of up to two target creatures.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

, Sacrifice Traveler's Amulet: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

: Target creature gets +1/+0 until end of turn. You gain 1 life. Activate only as a sorcery.

Enchant creature

At the beginning of each upkeep, put a plague counter on Traveling Plague.

Enchanted creature gets -1/-1 for each plague counter on Traveling Plague.

When enchanted creature leaves the battlefield, that creature's controller returns Traveling Plague from its owner's graveyard to the battlefield.

Search your library for up to X basic land cards, where X is the greatest power among creatures you control. Put those cards onto the battlefield tapped, then shuffle.

Flying

Whenever Treacherous Vampire attacks or blocks, sacrifice it unless you exile a card from your graveyard.

Threshold — As long as seven or more cards are in your graveyard, Treacherous Vampire gets +2/+2 and has "When Treacherous Vampire dies, you lose 6 life."

: Draw a card.

Treetop Village enters the battlefield tapped.

: Add .

: Treetop Village becomes a 3/3 green Ape creature with trample until end of turn. It's still a land. (It can deal excess combat damage to the player or planeswalker it's attacking.)

Flying

Whenever Treva, the Renewer deals combat damage to a player, you may pay . If you do, choose a color, then you gain 1 life for each permanent of that color.

Choose one —

• Destroy target enchantment.

• Exile target attacking creature.

• Draw a card, then discard a card.

Flying

Triskelavus enters the battlefield with three +1/+1 counters on it.

, Remove a +1/+1 counter from Triskelavus: Create a 1/1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this creature: This creature deals 1 damage to any target."

Constellation — Whenever an enchantment enters the battlefield under your control, Triton Waverider gains flying until end of turn.

Visit — An opponent chooses white card, land card, or planeswalker card, then mills a card. You have ten seconds to name something from the chosen category that starts with the same letter as the milled card. If you do, claim the prize

Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Trivia Contest and open an Attraction.

Lights — 2, 3, 6

Visit — An opponent chooses black card, artifact card, or expansion, then mills a card. You have ten seconds to name something from the chosen category that starts with the same letter as the milled card. If you do, claim the prize

Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Trivia Contest and open an Attraction.

Lights — 2, 5, 6

Visit — An opponent chooses green card, instant card, or named mechanic, then mills a card. You have ten seconds to name something from the chosen category that starts with the same letter as the milled card. If you do, claim the prize

Prize — You get , then you may put a sticker on a nonland permanent you own. Sacrifice Trivia Contest and open an Attraction.

Lights — 3, 5, 6

Whenever another creature enters the battlefield under your control, you gain life equal to that creature's toughness.

, : Populate. (Create a token that's a copy of a creature token you control.)

When Trove Tracker dies, draw a card.

Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

You have shroud. (You can't be the target of spells or abilities.)

Exile target artifact or enchantment.

Draw a card.

When Trusty Retriever enters the battlefield, choose one —

• Put a +1/+1 counter on Trusty Retriever.

• Return target artifact or enchantment card from your graveyard to your hand.

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.

: Target land becomes a Plains or an Island until end of turn.

Visit — Choose an opponent. They choose a creature they control, then you choose a creature you control. You may exile the chosen creatures. If you do, return them to the battlefield under their owners' control at the beginning of the next end step. Otherwise, the chosen creatures fight each other.

Lights — 2, 6

Choose a card name. Target player reveals cards from the top of their library until a card with that name is revealed. If it is, that player puts the rest of the revealed cards into their graveyard and puts the card with the chosen name on top of their library. Otherwise, the player shuffles.

Tuvasa the Sunlit gets +1/+1 for each enchantment you control.

Whenever you cast your first enchantment spell each turn, draw a card.

Enchant creature

Enchanted creature has double strike.

If Twinblade Invocation would be put into a graveyard from anywhere, exile it instead.

All Sliver creatures have menace. (They can't be blocked except by two or more creatures.)

Sleight of Hand — : Draw two cards.

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 the battlefield, if its surge cost was paid, it deals 3 damage to any target.

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."

Target creature you control gets +X/+X and gains hexproof and indestructible until end of turn. (A creature with hexproof and indestructible can't be the target of spells or abilities your opponents control. Damage and effects that say "destroy" don't destroy it.)

: Add .

Trample, haste

Other creatures you control get +1/+1 and have trample and haste.

Reach

Ulvenwald Hydra's power and toughness are each equal to the number of lands you control.

When Ulvenwald Hydra enters the battlefield, you may search your library for a land card, put it onto the battlefield tapped, then shuffle.

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.

Uncharted Haven enters the battlefield tapped.

As Uncharted Haven enters the battlefield, choose a color.

: Add one mana of the chosen color.

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

Look at the top four cards of your library. You may reveal up to two instant and/or sorcery cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in any order.

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

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 the battlefield 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.)

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

Flash

Undersea Invader enters the battlefield tapped.

Target creature gains undying until end of turn. (When it 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.)