Nemesis contains 143 cards.
It is part of Mercadian Masques block.
Released: 2000-02-14
Base set size: 143 cards.
Accumulated Knowledge

Accumulated Knowledge {1}{U}

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.
"I have seen and heard much here. There are secrets within secrets. Let me show you."
—Takara, to Eladamri
Aether Barrier

Aether Barrier {2}{U}

Whenever a player casts a creature spell, that player sacrifices a permanent unless they pay {1}.
"Creatures fade in and out of existence. It's an unfortunate side effect. The losses are tolerable."
Air Bladder

Air Bladder {U}

Enchantment - Aura
Enchant creature
Enchanted creature has flying.
Enchanted creature can block only creatures with flying.
Random mutations among Rootwater merfolk were common—and disturbing.

Cloudskate {1}{U}

Creature - Illusion
Fading 3

Daze {1}{U}

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.

Dominate {X}{1}{U}{U}

Gain control of target creature with mana value X or less.
"I've come to reclaim what is mine. And you, Greven, are mine."

Ensnare {3}{U}

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Tap all creatures.
Rootwater has become as dangerous to its denizens as to its enemies.

Infiltrate {U}

Target creature can't be blocked this turn.
Getting in was the easy part. Getting out proved to be more difficult.
Jolting Merfolk

Jolting Merfolk {2}{U}{U}

Creature - Merfolk
Fading 4
Remove a fade counter from Jolting Merfolk: Tap target creature.

Oraxid {3}{U}

Creature - Crab Beast
Protection from red
"I'm constantly amazed by the tenacity of living creatures on this plane. Even in the stronghold's white-hot core, life persists."
Pale Moon

Pale Moon {1}{U}

Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type.
Denizens of Rath had never seen the moon before. It was a symbol of change, not constancy.
Parallax Tide

Parallax Tide {2}{U}{U}

Fading 5
Remove a fade counter from Parallax Tide: Exile target land.
When Parallax Tide leaves the battlefield, each player returns to the battlefield all cards they own exiled with Parallax Tide.
Rising Waters

Rising Waters {3}{U}

Lands don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player untaps a land they control.
Rising waters, sinking hope.
Rootwater Commando

Rootwater Commando {2}{U}

Creature - Merfolk
Rootwater merfolk are seldom seen these days, but elf corpses are as numerous as ever.
Rootwater Thief

Rootwater Thief {1}{U}

Creature - Merfolk Rogue
{U}: Rootwater Thief gains flying until end of turn.
Whenever Rootwater Thief deals combat damage to a player, you may pay {2}. If you do, search that player's library for a card and exile it, then the player shuffles.

Seahunter {2}{U}{U}

Creature - Human Mercenary
{3}, {T}: Search your library for a Merfolk permanent card, put it onto the battlefield, then shuffle.
"They can't feel pain. They just wiggle 'cause they're scared."
Seal of Removal

Seal of Removal {U}

Sacrifice Seal of Removal: Return target creature to its owner's hand.
"I am the unraveler, the loosened thread that will not hold."
—Seal inscription
Sliptide Serpent

Sliptide Serpent {4}{U}{U}

Creature - Serpent
{3}{U}: Return Sliptide Serpent to its owner's hand.
It's futile to fight something you can see only in the corner of your eye.
Sneaky Homunculus

Sneaky Homunculus {1}{U}

Creature - Homunculus Illusion
Sneaky Homunculus can't block or be blocked by creatures with power 2 or greater.
Keep watch only for the giants and you'll be eaten by the ants.
Stronghold Biologist

Stronghold Biologist {2}{U}

Creature - Human Spellshaper
{U}{U}, {T}, Discard a card: Counter target creature spell.
He twists the laws of nature until they scream.
Stronghold Machinist

Stronghold Machinist {2}{U}

Creature - Human Spellshaper
{U}{U}, {T}, Discard a card: Counter target noncreature spell.
She stretches the laws of physics until they snap.
Stronghold Zeppelin

Stronghold Zeppelin {2}{U}{U}

Creature - Human
Stronghold Zeppelin can block only creatures with flying.
As long as the stronghold controlled the sky, the rebels were doomed.

Submerge {4}{U}

If an opponent controls a Forest and you control an Island, you may cast this spell without paying its mana cost.
Put target creature on top of its owner's library.
Trickster Mage

Trickster Mage {U}

Creature - Human Spellshaper
{U}, {T}, Discard a card: You may tap or untap target artifact, creature, or land.
"If it ain't broke, I'll break it. If it is broke, I'll fix it."
Wandering Eye

Wandering Eye {2}{U}

Creature - Illusion
Players play with their hands revealed.
The evincar has many ways of keeping track of his subjects.