Flying

Archfiend of the Dross enters the battlefield with four oil counters on it.

At the beginning of your upkeep, remove an oil counter from Archfiend of the Dross. Then if it has no oil counters on it, you lose the game.

Whenever a creature an opponent controls dies, its controller loses 2 life.

When Arrogant Outlaw enters the battlefield, if an opponent lost life this turn, each opponent loses 2 life and you gain 2 life.

Indestructible

When Barbed Servitor enters the battlefield, suspect it. (It has menace and can't block.)

Whenever Barbed Servitor deals combat damage to a player, you draw a card and you lose 1 life.

Whenever Barbed Servitor is dealt damage, target opponent loses that much life.

Raid — When Bellowing Saddlebrute enters the battlefield, you lose 4 life unless you attacked this turn.

When Bishop of the Bloodstained enters the battlefield, target opponent loses 1 life for each Vampire you control.

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

Flying

When Bloodhunter Bat enters the battlefield, target player loses 2 life and you gain 2 life.

Flying

At the beginning of your end step, exile the top card of each opponent's library. You may play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.

Whenever a nonland permanent an opponent owns enters the battlefield under your control, they lose life equal to its mana value.

Horsemanship (This creature can't be blocked except by creatures with horsemanship.)

When Cao Ren, Wei Commander enters the battlefield, you lose 3 life.

Flying

When Carrion Locust enters the battlefield, exile target card from an opponent's graveyard. If it was a creature card, that player loses 1 life.

When CARDNAME enters the battlefield, create two 1/1 black Insect creature tokens.

Whenever CARDNAME attacks, you may sacrifice an Insect. When you do, curse defending player. (Create a black Aura Curse enchantment token that's attached to that player. It has enchant player and "At the beginning of your upkeep, you lose 1 life.")

As Circle of Affliction enters the battlefield, choose a color.

Whenever a source of the chosen color deals damage to you, you may pay . If you do, target player loses 1 life and you gain 1 life.

Enchant creature (Target a creature as you cast this. This card enters the battlefield attached to that creature.)

Whenever enchanted creature attacks or blocks, its controller loses 3 life.

As Curse of Wizardry enters the battlefield, choose a color.

Whenever a player casts a spell of the chosen color, that player loses 1 life.

Flying, menace

Exterminate — When Dalek Drone enters the battlefield, destroy target creature an opponent controls. That player loses 3 life.

When Demonic Lore enters the battlefield, draw three cards.

At the beginning of your end step, you lose 2 life for each card in your hand.

Deathtouch

When Diregraf Scavenger enters the battlefield, exile up to one target card from a graveyard. If a creature card was exiled this way, each opponent loses 2 life and you gain 2 life.

Flying, haste

When Dissatisfied Customer enters the battlefield, roll a six-sided die. If the result is 3 or less, you lose that much life.

Whenever a Swamp enters the battlefield under your control, choose one —

• You draw a card and you lose 1 life.

• Dread Presence deals 2 damage to any target and you gain 2 life.

When Dreadhound enters the battlefield, mill three cards. (Put the top three cards of your library into your graveyard.)

Whenever a creature dies or a creature card is put into a graveyard from a library, each opponent loses 1 life.

As an additional cost to cast this spell, sacrifice a creature, discard a card, or pay 4 life.

When Dusk Mangler enters the battlefield, each opponent sacrifices a creature, discards a card, and loses 4 life.

When Etched Host Doombringer enters the battlefield, choose one —

• Target opponent loses 2 life and you gain 2 life.

• Choose target battle. If an opponent protects it, remove three defense counters from it. Otherwise, put three defense counters on it.

Flying

When Faerie Dreamthief enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

, Exile Faerie Dreamthief from your graveyard: You draw a card and you lose 1 life.

Flying

Devour 1 (As this enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with that many +1/+1 counters on it.)

Whenever Fell Beast of Mordor enters the battlefield or attacks, target opponent loses X life and you gain X life, where X is the number of +1/+1 counters on it.

Deathtouch

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Fell Stinger exploits a creature, target player draws two cards and loses 2 life.

When Forerunner of the Coalition enters the battlefield, you may search your library for a Pirate card, reveal it, then shuffle and put that card on top.

Whenever another Pirate enters the battlefield under your control, each opponent loses 1 life.

Geralf's Messenger enters the battlefield tapped.

When Geralf's Messenger enters the battlefield, target opponent loses 2 life.

Undying (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.)

Menace

Whenever Glint-Sleeve Siphoner enters the battlefield or attacks, you get (an energy counter).

At the beginning of your upkeep, you may pay . If you do, you draw a card and you lose 1 life.

Ward—Discard a card.

Whenever Graveyard Trespasser enters the battlefield or attacks, exile up to one target card from a graveyard. If a creature card was exiled this way, each opponent loses 1 life and you gain 1 life.

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

When Gray Merchant of Asphodel enters the battlefield, each opponent loses X life, where X is your devotion to black. You gain life equal to the life lost this way. (Each in the mana costs of permanents you control counts toward your devotion to black.)

Constellation — Whenever Grim Guardian or another enchantment enters the battlefield under your control, each opponent loses 1 life.

Whenever Hagra Diabolist or another Ally enters the battlefield under your control, you may have target player lose life equal to the number of Allies you control.

When Highway Robber enters the battlefield, target opponent loses 2 life and you gain 2 life.

When Hopeless Nightmare enters the battlefield, each opponent discards a card and loses 2 life.

When Hopeless Nightmare is put into a graveyard from the battlefield, scry 2.

: Sacrifice Hopeless Nightmare.

Menace

When Hunted Bonebrute enters the battlefield, target opponent creates two 1/1 white Dog creature tokens.

When Hunted Bonebrute dies, each opponent loses 3 life.

Disguise

Whenever Jerren, Corrupted Bishop enters the battlefield or another nontoken Human you control dies, you lose 1 life and create a 1/1 white Human creature token.

: Target Human you control gains lifelink until end of turn.

At the beginning of your end step, if you have exactly 13 life, you may pay . If you do, transform Jerren.

When Laquatus's Champion enters the battlefield, target player loses 6 life.

When Laquatus's Champion leaves the battlefield, that player gains 6 life.

: Regenerate Laquatus's Champion.

When Liliana's Contract enters the battlefield, you draw four cards and you lose 4 life.

At the beginning of your upkeep, if you control four or more Demons with different names, you win the game.

When Lobelia enters the battlefield, look at the top card of each opponent's library and exile those cards face down.

, Sacrifice an artifact: Choose one —

• Until end of turn, you may play a card exiled with Lobelia without paying its mana cost.

• Each opponent loses 2 life and you gain 2 life.

Maga, Traitor to Mortals enters the battlefield with X +1/+1 counters on it.

When Maga enters the battlefield, target player loses life equal to the number of +1/+1 counters on it.

When Malakir Blood-Priest enters the battlefield, each opponent loses X life and you gain X life, where X is the number of creatures in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.)

When Marchesa's Decree enters the battlefield, you become the monarch.

Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life.

When Massacre Wurm enters the battlefield, creatures your opponents control get -2/-2 until end of turn.

Whenever a creature an opponent controls dies, that player loses 2 life.

Midnight Oil enters the battlefield with seven hour counters on it.

At the beginning of your draw step, draw an additional card and remove two hour counters from Midnight Oil.

Your maximum hand size is equal to the number of hour counters on Midnight Oil.

Whenever you discard a card, you lose 1 life.

Flying

When Necrogen Scudder enters the battlefield, you lose 3 life.

Flying

When Nightdrinker Moroii enters the battlefield, you lose 3 life.

Disguise (You may cast this card face down for as a 2/2 creature with ward . Turn it face up any time for its disguise cost.)

Partner with Yannik, Scavenging Sentinel (When this creature enters the battlefield, target player may put Yannik into their hand from their library, then shuffle.)

Menace

Whenever another creature you control leaves the battlefield, if it had one or more counters on it, you draw a card and you lose 1 life.

As Palace Siege enters the battlefield, choose Khans or Dragons.

• Khans — At the beginning of your upkeep, return target creature card from your graveyard to your hand.

• Dragons — At the beginning of your upkeep, each opponent loses 2 life and you gain 2 life.

When Phyrexian Gargantua enters the battlefield, you draw two cards and you lose 2 life.

Menace

When Plague Belcher enters the battlefield, put two -1/-1 counters on target creature you control.

Whenever another Zombie you control dies, each opponent loses 1 life.