msem-instigator

When Customs Lookout enters, each player draws a card, then discards a card.
Whenever an opponent casts a spell with the same name as a card they own in exile or in their graveyard, you may scry 2.

Pressure {3}{U}{B} (You may cast this spell for its pressure cost if there are seven or more cards in your graveyard.)
Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
{U}{B}, Reveal Cuxuri Beckoner from your hand: Target player mills two cards.

Choose one—
• Look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.
• Return target creature card from your graveyard to your hand.
• Target creature can't be blocked this turn.

Flying
At the beginning of your upkeep, if you have at least two more cards in hand than any opponent, scry 1.

At the beginning of your upkeep, you may choose a color, then exile two cards of that color from your graveyard. If you do, return a creature, instant, or sorcery card of that color from your graveyard to your hand.

{U}, Discard a card: Exile target instant or sorcery card from your graveyard. If you do, copy it. You may cast the copy.
{B}, Discard a card: Exile target creature card from your graveyard and pay its mana cost. If you do, create a token that's a copy of it. Activate only as a sorcery.

Deception can't be blocked.
{1}{U}{B}: Target creature can't be blocked this turn. Activate only if Deception is in your graveyard.

Deeplife Cavern enters tapped unless you control a Forest.
{T}: Add {U} or {B}.

Target opponent reveals their hand. You choose a nonland card from it. That player discards that card.
Create a Function token with “Draw a card if a player discarded a card this turn.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)

Search target opponent's library for a card and exile it, then do the same for their hand and graveyard. That player shuffles. You may cast spells exiled this way for as long as they remain exiled, and you may spend mana as though it were mana of any color to do so.

Creatures you don't control get -1/-0 as long as their controller is cursed.

Repeat the following process X times. Reveal the top two cards of your library. Put one of them into your hand and the other into your graveyard.

{2}{U}{B}: Return Depth Charger to its owner's hand. If you do, return target creature to its owner's hand. That player discards a card.

Descended Hollow enters tapped.
{T}: Add {U} or {B}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Once each turn, when you foretell a card or cast a foretold spell, you may create a 1/1 blue Rogue creature token.
{1}{U}{B}: Draw a card, then discard a card.

Counter target monocolored spell. Its controller loses 2 life.

You may cast spells as though they had flash.
Whenever you cast a sorcery spell, each opponent loses 3 life unless they discard a card or sacrifice a nonland permanent.

Flying
Ward—Pay 2 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 2 life.)
Whenever Dire Harpies of Odunos or another creature with flying you control enters, each opponent loses 1 life and you gain 1 life.

Dismal Backwater enters tapped.
When Dismal Backwater enters, you gain 1 life.
{T}: Add {U} or {B}.

Divine in Blood deals 2 damage to target player, then that player draws four cards.

When Diviner of the Mists enters, target opponent chooses two cards in their hand and reveals one of them. Exile one of those cards. You may play that card for as long as it remains exiled, and spend mana as though it were mana of any color to cast it.

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{5}{U/B}{U/B}: Gain control of target creature with mana value 3 or less until Dollmaster leaves the battlefield.

Pressure {3}{U}{B} (You may cast this spell for its pressure cost if seven or more cards are in your graveyard.)
Destroy up to one target creature. Return all other nonland permanents to their owners' hands.

{2}{U}{B}, Sacrifice a creature: Return target creature card from your graveyard to the battlefield with a finality counter on it. It gains myriad. (Whenever it attacks, for each opponent other than defending player, you may put a token that's a copy of this creature onto the battlefield tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

When Dream Keeper enters, each player conjures a card named Fatigue and puts it on top of their library. (It's a colorless sorcery that costs {2} with “Draw a card.”)
Whenever a player draws a card except the first one they draw in each of their draw steps, each opponent mills a card.