When The Love of a Lifetime enters the battlefield, you may search your library for a legendary creature card that doesn't share a name with a creature you control, reveal it, put it into your hand, then shuffle.
Creatures you control get +1/+1.

Indestructible
Whenever a player attacks with two or more creatures, you draw a card and you create a Treasure token.
Whenever a player casts their second spell each turn, create a 1/1 colorless Cyborg artifact creature token, then put a +1/+1 counter on each Cyborg you control.

When The Smoking Strand enters the battlefield, you may search your library for a planeswalker card, reveal it, put it into your hand, then shuffle.
Planeswalkers you control have “+1: Draw a card.”

When The Whisper of Eltensia enters the battlefield, if you cast it from your hand and a permanent you controlled left the battlefield this turn, add {R}{R}{R}.
{2}{R}{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste and “At the beginning of the end step, sacrifice this creature.”

Tap all permanents.
Exile The World Stood Still.

When Thoveus Adi dies, put him into his owner's library third from the top.
[+1]: At the beginning of your next upkeep, draw a card.
[–3]: At the beginning of target opponent's next end step, that player sacrifices two creatures.
[–8]: When you next cast a Thoveus spell, take two extra turns after this one.

At the beginning of combat on your turn, Thrill of the Trendchase becomes a copy of a creature on the battlefield chosen at random until end of turn, except it's a 5/5 red Elemental with flying and haste and isn't legendary if the chosen creature is legendary.

Equipped creature gets +2/+0 and has protection from permanents and spells with greater mana value than itself. This effect doesn't remove Titansbane.
Equip {2}{W}

As Top of the Charts enters the battlefield, choose a mana value.
Creatures with the chosen mana value get +1/+1. All other creatures get -1/-1.

First strike
Whenever Tormenting Lightrider attacks, if defending player has 10 or less life, Tormenting Lightrider gains double strike until end of turn.
At the beginning of your end step, if a creature died this turn, each opponent loses 3 life unless they discard a card or sacrifice a nonland permanent.

Haste
Whenever Truthcleaver attacks, you may have each player discard a card, then draw a card.
{T}, Sacrifice Truthcleaver: Exile target card from a graveyard. If it was a noncreature, nonland card, you may cast a copy of it.

Whenever a Ruin you control becomes spellcharged, it gets +1/+0 and gains haste until end of turn.
Spellcharge 2

First strike, vigilance
Whenever Unburnt Maiden enters the battlefield or attacks, you may have it dare X, where X is the number of creatures you control. If you don't, create a 1/1 white Warrior creature token.

Whenever you cast a colorless spell, you may pay {C}. If you do, copy it. You may choose new targets for the copy.
Whenever a creature you control attacks, put a +1/+1 counter on it for each other creature you control with the same name as that creature.

[+2]: Create a colorless artifact token named Potion with “Sacrifice this artifact: Put two +1/+1 counters on target creature. Activate only as a sorcery.”
[–3]: You gain 8 life.
[0]: Remove all loyalty counters from Vasilisa, Helping Hand, then transform her.

As this permanent transforms into Vasilisa, Waging War, it becomes your choice of a 7/7 Hydra with trample, a 6/5 Kraken with hexproof, or a 5/6 Spider with vigilance, reach, and deathtouch.

When Vibrant Vengeance enters the battlefield, all creatures get -2/-2 until of turn.
Whenever you tap a land for mana, add one mana of any type that land produced.

Lifelink, deathtouch
Indulgence
Whenever you indulge, put a +1/+1 counter on each Noble you control.

When Vorpal Titan enters the battlefield, destroy all nonbasic lands.

Once each turn, when you cast an instant or sorcery spell, you may create a 1/0 blue Elemental creature token.
Elementals you control get +1/+1.
{2}{U}, Sacrifice an Elemental: Tap up to one target creature. Scry 1.

Wildcourt Seeker's power and toughness are each equal to the number of land types among lands you control.
Whenever Wildcourt Seeker enters the battlefield or attacks, put up to one target land card from your graveyard onto the battlefield under your control.

Flash
Multitude {4}{U}{U}
You may have Wildkin Imposter enter the battlefield as a copy of any creature on the battlefield.

Whenever Witchfinder Artur enters the battlefield or attacks, each opponent mills two cards and loses 2 life.
Whenever you cast an instant or sorcery spell, you may exile target instant or sorcery card with mana value less than that spell's mana value from an opponent's graveyard. If you do, cast a copy of the exiled card without paying its mana cost.

[+2]: Mill three cards. You gain 3 life.
[+1]: Return target land card from your graveyard to the battlefield. It becomes a 2/2 black Zombie creature in addition to its other types.
[–X]: Target opponent sacrifices a nonland permanent with mana value X or greater.
[–12]: You get an emblem with “Whenever a player sacrifices a permanent, you may draw a card.” Then each opponent sacrifices five permanents.

At the beginning of combat on your turn, you may integrate another creature you control. If you don't, tap Xavvac, Corrupter Core.
Permanents you control with cards integrated onto them have lifelink and deathtouch.