msem-instigator

Counter target spell unless its controller discards two cards.

When Breaker of Secrets enters, each player mills three cards from each of their libraries.
Recite {U} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

{T}: Add {C}.
{1}, {T}: Add {U}{B}.

Flash
Whenever you cast your second spell each turn, put a +1/+1 counter on Brooding Replacement.

Your life total becomes 0. Until an opponent's next turn, you can't lose the game, your opponents can't win the game, and you can't gain life.
Take an extra turn after this one.
Exile Buy Time.

When Cave Eel enters, look at the top three cards of your library. Put one on top and the rest on the bottom in any order.

Cesspool Scrapper can't block.
{5}{U}, Exile Cesspool Scrapper from your graveyard: Draw two cards.

As Choked Estuary enters, you may reveal an Island or Swamp card from your hand. If you don't, Choked Estuary enters tapped.
{T}: Add {U} or {B}.

Whenever you cast a Rogue spell or a spell from exile, you may return Cobri to her owner's hand.

Each player draws a card, then target player mills X cards, where X is the number of cards players have drawn this turn.

Crumbling Aqueduct enters tapped unless you control another Desert.
{T}: Add {U} or {B}.

{T}: Add {C}.
{T}, Pay 1 life: Add {U} or {B}.

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}.

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.)