msem-instigator

Tap target creature. Prevent all damage that would be dealt to and dealt by that creature this turn.

Target player sacrifices an attacking or blocking creature. Prevent all damage that would be dealt by creatures this turn.

Untap target creature. Prevent all damage that would be dealt to that creature this turn. Scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a creature dies or a time counter is removed from Mourn the Lost, you may tap target creature.

{G}: Exile target card from a graveyard. You gain 1 life and Purging Watchkeeper gets +1/+1 until end of turn.

First strike
Engage (This creature must be blocked each combat if able.)

At the beginning of your upkeep, you gain 1 life. Then if your life total is greater than or equal to your starting life total, you gain an additional 1 life and scry 1. Then if your life total is greater than or equal to three times your starting life total, you win the game.

{T}: Target attacking or blocking creature gets +1/+1 until end of turn.

Persist (When this creature 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.)

Enchant creature
Enchanted creature can't attack or block.
{2}{U}: Return Whiplash and enchanted creature to their owners' hands.

Enchant creature
When Awash in Despair enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.

When Boneweary Warrior dies, you may put a -1/-1 counter on target creature.

When Debt Dignitary enters, tap target nonland permanent. That permanent doesn't untap during its controller's untap step for as long as you control Debt Dignitary.

Defender
When Dispossessed Noble enters, draw a card.

Vanishing 3 (This permanent enters with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Creatures get -1/-0.
{1}{W}: You gain 1 life for each time counter on Dwindling Peace.

Return all nonland permanents to their owners' hands.

Vanishing 2 (This permanent enters with two time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Whenever a time counter is removed from Evade the Authorities, you may return target creature to its owner's hand.

Vanishing 4 (This permanent enters with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When the last time counter is removed from Exquisite Heist, draw three cards.

Target creature can't be blocked this turn.
Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

When Fretport Bounty Hunter enters, scry 1.

{2}{U}: Each player mills three cards.
{3}{B}, Discard a card: Return target creature card from your graveyard to your hand. Proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

Whenever another creature enters, Masquerading Bohemian becomes a copy of that creature except it's a Noble in addition to its other types and it has this ability.

Return target nonland permanent to its owner's hand. That player mills two cards.

When Morose Bohemian enters, scry 1, then draw a card.

Put target spell or nonland permanent on top of its owner's library.