msem-instigator

Disgraced 1 (This enters with a -1/-1 counter. Whenever it deals combat damage to a player, remove all -1/-1 counters from it.)
Attain {3}{W} ({3}{W}: Transform this. Spend at least three colors of mana to activate this, and only as a sorcery.)

If you would create a token, you may instead create a tapped 2/2 green Faerie Bard creature token.
Whenever one or more creature tokens you control deal combat damage to a player, that player sacrifices an artifact or enchantment.

Create an X/X green Mutant creature token, where X is the greatest power among creatures you've controlled this turn. If you control a creature with flying, the token has flying. The same is true for first strike, double strike, deathtouch, hexproof, haste, indestructible, lifelink, menace, reach, trample, and vigilance.

Target creature gets +3/+3 and gains trample until end of turn.
Lifecycle {3} ({3}, Discard this card: Create two tapped 1/1 colorless Elemental creature tokens.)

Veteran's Study enters tapped.
When Veteran's Study enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {R} or {W}.

Target opponent exiles two cards from their hand. If that player is cursed, they lose 3 life.

Defender
When Virtual Access Point enters, create a Function token with “Target player mills four cards.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

When Virtue of Propriety enters, return target creature card with mana value 3 or less from your graveyard to your hand.

Virtuoso's Parlor enters tapped.
When Virtuoso's Parlor enters, look at the top card of your library. You may put it into your graveyard.
{T}: Add {W} or {B}.

Flash
When Visage of Hope enters, you gain 3 life.

{T}: Add {G}.
{T}: Sacrifice Visionary Developer: Create a token that's a copy of target token you control. Activate only as a sorcery.

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.

Vigilance

Counter target spell unless its controller pays {2}.
Lifecycle {3} ({3}, Discard this card: Create two tapped 1/1 colorless Elemental creature tokens.)

{T}, Pay 1 life: Add {B} or {G}.
{2}, {T}, Sacrifice Walled Garden and another permanent: Draw a card. Activate only during your turn.

Angels, Demons, Faeries, and Spirits you control get +1/+1.
{2}{W}{B}, Pay 1 life, Discard a card: Create a tapped 1/1 white Spirit creature token with flying.

As Wayward Wanderers enters, you may have it become X/X with ward {X} and “Other creatures you control have base power and toughness X/X.”
{1}{G}: Return Wayward Wanderers to its owner's hand.

{T}, Pay 1 life: Add {U} or {B}.
{2}, {T}, Sacrifice Weathered Wharf and another permanent: Draw a card. Activate only during your turn.

At the beginning of your upkeep, discard a card and create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Destroy target creature.
You gain 2 life.

Enchant creature with flying
Enchanted creature can't attack or block, and it loses all abilities other than flying.

Deathtouch
{T}: Add one mana of any color.

Flash
When Witch of the Veil enters, if it was cast, you may sacrifice a creature. If you do, return that card to the battlefield under its owner's control.

Flash
When Wormwood's Agent dies, create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Whenever you cast an instant or sorcery spell, put a loyalty counter on Xenocrata and tap up to one target permanent.
[0]: Each opponent can't untap more than three permanents during their next untap step.
[–3]: Xenocrata deals 6 damage divided as you choose among any number of target creatures and/or planeswalkers.
[–9]: Cast any number of instant and/or sorcery cards you own in exile and from your graveyard without paying their mana costs.