msem-instigator

Alpha (You may have this creature enter with a +1/+1 counter on it. If you do, it becomes alpha and can only attack alone.)
Vigilance

When Vile Progenitor enters, create a 3/2 colorless Horror creature token.
As long as you control five or more lands, Horrors you control get +1/+1 and have trample.
Evoke {1}{G} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)

When Vile Weavers enters, if you control an enchantment, target player loses 3 life.

As long as Vinehorn Stag has a +1/+1 counter on it, it can't be blocked by more than one creature.

When Viork Woods Butcher enters, if you control another Warrior, target opponent loses 2 life.

Menace
Whenever a player gains life, that player sacrifices a permanent.

Trample
Whenever you cast a noncreature spell, put a +1/+1 counter on Virtuorangutan.

Lifelink
Vitality of Blossoms has indestructible as long as your life total is greater than your starting life total.

Whenever you cast your second spell each turn, create a 1/1 blue Jellyfish Spirit creature token with flying.

Poisonous 2 (Whenever this creature deals combat damage to a player, that player gets two poison counters.)
{2}{B}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind.

At the beginning of your end step, if you gained life this turn, you gain 2 life.
Pay 3 life: Target attacking creature gains indestructible until end of turn.

When Voice of Revolution enters, Rebel creatures you control get +1/+0 and gain haste until end of turn.

When Voiceless Assailant enters, you may search your library for up to three cards named Voiceless Assailant, reveal them, put them into your hand, then shuffle.

Voidtouched Nightblade can't block.
Simulacrum (When this creature dies, exile it from your graveyard. If you do, create a token that is a copy of it except it is a colorless 1/1 Crystal Elf Rogue artifact creature.)

When Volcano Elemental dies, it deals 2 damage to any target.

When Voliv Ritualist enters, choose two different basic land types. Create a tapped colorless land token that's the chosen types. When Voliv Ritualist is no longer on the battlefield, sacrifice a land.

Vigilance

Adorned — As long as Voyaging Devout is equipped and/or enchanted, creatures with power less than its power can't block it.

Changeling (This card is every creature type.)
{1}{G/U}: Vune, the Facemaker becomes a copy of target creature you control, except its name is Vune, the Facemaker, it's legendary, and it has changeling and this ability. Activate only as a sorcery.

Whenever Wadepool Frog attacks, it gains flying until end of turn.

Flying
Wailing Soul has hexproof as long as it's not attacking or blocking.

Flying
{2}{W}: Target Spirit creature gets +0/+1 until end of turn.

Whenever Wakeborne Kraken or another Kraken, Leviathan, Octopus, or Serpent you control enters, you may return target creature an opponent controls to its owner's hand.
Whenever a creature an opponent controls leaves the battlefield, if it didn't die, draw a card.

At the beginning of your upkeep, each player discards a card.
Whenever Waking Watcher attacks, if defending player has no cards in hand, it gets +3/+3 and gains menace until end of turn.