Chemister's Insight

Draw two cards.
Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Swamp

Gruesome Discovery

Target player discards two cards.
Morbid — If a creature died this turn, instead that player reveals their hand, you choose two cards from it, then that player discards those cards.

Cower in Fear

Creatures your opponents control get -1/-1 until end of turn.

Mahamoti Djinn

Flying (This creature can't be blocked except by creatures with flying or reach.)

Squelching Leeches

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.

Spell Shrivel

Devoid (This card has no color.)
Counter target spell unless its controller pays {4}. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Reef Pirates

Whenever Reef Pirates deals damage to an opponent, that player mills a card.

Dire Fleet Interloper

Menace
When Dire Fleet Interloper enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Convolute

Counter target spell unless its controller pays {4}.

Price of Fame

This spell costs {2} less to cast if it targets a legendary creature.
Destroy target creature.
Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Salvage Drone

Devoid (This card has no color.)
Ingest (Whenever this creature deals combat damage to a player, that player exiles the top card of their library.)
When Salvage Drone dies, you may draw a card. If you do, discard a card.

Infectious Horror

Whenever Infectious Horror attacks, each opponent loses 2 life.

Raiders' Wake

Whenever an opponent discards a card, that player loses 2 life.
Raid — At the beginning of your end step, if you attacked this turn, target opponent discards a card.

Divination

Dream Fracture

Counter target spell. Its controller draws a card.
Draw a card.

Crashing Tide

This spell has flash as long as you control a Merfolk.
Return target creature to its owner's hand.
Draw a card.

Bone Splinters

As an additional cost to cast this spell, sacrifice a creature.
Destroy target creature.

Harbor Bandit

Harbor Bandit gets +1/+1 as long as you control an Island.
{1}{U}: Harbor Bandit can't be blocked this turn.

Murder

Chasm Drake

Flying
Whenever Chasm Drake attacks, target creature you control gains flying until end of turn.

Soulcage Fiend

When Soulcage Fiend dies, each player loses 3 life.

Shriekgeist

Flying
Whenever Shriekgeist deals combat damage to a player, that player mills two cards.

Island

Liturgy of Blood

Patient Rebuilding

At the beginning of your upkeep, target opponent mills three cards, then you draw a card for each land card put into their graveyard this way.

Evolving Wilds

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Cry of the Carnarium

All creatures get -2/-2 until end of turn. Exile all creature cards in all graveyards that were put there from the battlefield this turn. If a creature would die this turn, exile it instead.

Tricks of the Trade

Enchant creature
Enchanted creature gets +2/+0 and can't be blocked.

Monastery Flock

Defender, flying
Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Sailor of Means

When Sailor of Means enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Prying Blade

Equipped creature gets +1/+0.
Whenever equipped creature deals combat damage to a player, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")
Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

Dissolve

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom.)

Mage Hunters' Onslaught

Destroy target creature or planeswalker.
Whenever a creature blocks this turn, its controller loses 1 life.

Pirate's Prize

Draw two cards. Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Go Blank

Target player discards two cards. Then exile that player's graveyard.

Chronic Flooding

Enchant land
Whenever enchanted land becomes tapped, its controller mills three cards.

Feral Abomination

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Aether Tunnel

Enchant creature
Enchanted creature gets +1/+0 and can't be blocked.

Cathodion

Detection Tower

{T}: Add {C}.
{1}, {T}: Until end of turn, your opponents and creatures your opponents control with hexproof can be the targets of spells and abilities you control as though they didn't have hexproof.

Mind Rot

Environmental Sciences

Search your library for a basic land card, reveal it, put it into your hand, then shuffle. You gain 2 life.