Whenever a creature enters the battlefield under your control, you gain 1 life.

Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

{T}: Add one mana of any color in your commander's color identity.

Kicker {B} (You may pay an additional {B} as you cast this spell.)

When Benalish Sleeper enters the battlefield, if it was kicked, each player sacrifices a creature.

At the beginning of your upkeep, you lose 1 life and create a 1/1 black Faerie Rogue creature token with flying.

Whenever Blood Artist or another creature dies, target player loses 1 life and you gain 1 life.

Bloodghast can't block.

Bloodghast has haste as long as an opponent has 10 or less life.

Landfall -- Whenever a land enters the battlefield under your control, you may return Bloodghast from your graveyard to the battlefield.

Sacrifice a creature: Bloodthrone Vampire gets +2/+2 until end of turn.

Carrion Feeder can't block.

Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Flash

{1}, Sacrifice Cathar Commando: Destroy target artifact or enchantment.

Charcoal Diamond enters the battlefield tapped.

{T}: Add {B}.

Sacrifice Children of Korlis: You gain life equal to the life you've lost this turn. (Damage causes loss of life.)

(Gain the next level as a sorcery to add its ability.)

If you would gain life, you gain that much life plus 1 instead.

{3}{W}: Level 2

Whenever you gain life, put a +1/+1 counter on target creature you control.

{4}{W}: Level 3

When this Class becomes level 3, return target creature card from your graveyard to the battlefield. You gain life equal to that creature's toughness.

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

Whenever Cruel Celebrant or another creature or planeswalker you control dies, each opponent loses 1 life and you gain 1 life.

Enchant creature card in a graveyard

When Dance of the Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Dance of the Dead." Put enchanted creature card onto the battlefield tapped under your control and attach Dance of the Dead to it. When Dance of the Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets +1/+1 and doesn't untap during its controller's untap step.

At the beginning of the upkeep of enchanted creature's controller, that player may pay {1}{B}. If the player does, untap that creature.

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.

Enchant creature

Enchanted creature is an Insect artifact creature with base power and toughness 0/1 and has indestructible, and it loses all other abilities, card types, and creature types.

Shadow (This creature can block or be blocked by only creatures with shadow.)

If a card would be put into an opponent's graveyard from anywhere, instead exile it with a void counter on it.

{T}, Sacrifice Dauthi Voidwalker: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.

Whenever you gain life, you may pay {2}. If you do, draw a card.

{3}{W}: Create a 1/1 white Soldier creature token with lifelink.

Daxos's toughness is equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)

Whenever another creature you control enters the battlefield or dies, you gain 1 life.

{1}{B}, Sacrifice an artifact or creature: Draw a card.

At the beginning of your upkeep, you lose 1 life and amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control an Army, create a 0/0 black Zombie Army creature token first.)

Whenever a Zombie token you control with power 6 or greater attacks, it gains lifelink until end of turn.

Deathtouch

Whenever another creature enters the battlefield under your control, you gain 1 life.

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

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is Esper Sentinel's power.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Whenever you sacrifice another creature, you gain 1 life and scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{1}, Sacrifice another creature: Fleshtaker gets +2/+2 until end of turn.

At the beginning of your end step, if you control no creatures with decayed, create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)

Sacrifice Kami of False Hope: Prevent all combat damage that would be dealt this turn.

Whenever you gain life, put two +1/+1 counters on Karlov of the Ghost Council.

{W}{B}, Remove six +1/+1 counters from Karlov of the Ghost Council: Exile target creature.

Enchant creature or planeswalker you control

When enchanted permanent dies or is put into exile, return that card to the battlefield under your control.

First strike

If you would gain life, you gain that much life plus 1 instead.

{1}{W}: Knight of Dawn's Light gets +1/+1 until end of turn.

When Leonin Relic-Warder enters the battlefield, you may exile target artifact or enchantment.

When Leonin Relic-Warder leaves the battlefield, return the exiled card to the battlefield under its owner's control.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.)

Equip {0}

At the beginning of each opponent's end step, if you didn't lose life this turn, you may put a quest counter on Luminarch Ascension. (Damage causes loss of life.)

{1}{W}: Create a 4/4 white Angel creature token with flying. Activate only if Luminarch Ascension has four or more quest counters on it.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

{T}: Add {C}{C}.

Marble Diamond enters the battlefield tapped.

{T}: Add {W}.

{T}, Sacrifice Mishra's Bauble: Look at the top card of target player's library. Draw a card at the beginning of the next turn's upkeep.

{1}, {T}: Add {W}{B}.

{1}{B}, Pay 2 life: Return target creature card from your graveyard to your hand.

{T}, Pay 3 life, Sacrifice Priest of Fell Rites: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.

Unearth {3}{W}{B} ({3}{W}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

{T}, Sacrifice two other creatures: Any number of target players each lose 2 life and sacrifice a creature. You add {B}{B} and draw a card.

Sacrifice Seal of Cleansing: Destroy target artifact or enchantment.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

As long as you have 30 or more life, Serra Ascendant gets +5/+5 and has flying.

Equipped creature gets +1/-1.

Whenever equipped creature dies, draw two cards.

Equip {1}

{T}: Add {C}{C}.

Whenever another creature enters the battlefield, you gain 1 life.

Whenever another creature enters the battlefield, you may gain 1 life.

Sacrifice a creature: Put a charge counter on Spawning Pit.

{1}, Remove two charge counters from Spawning Pit: Create a 2/2 colorless Spawn artifact creature token.

When Spirited Companion enters the battlefield, draw a card.

Whenever another creature enters the battlefield under your control, you may gain 1 life.

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

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

{T}: Add {C}.

{T}: Add {W} or {B}. Talisman of Hierarchy deals 1 damage to you.

{T}, Sacrifice Urza's Bauble: Look at a card at random in target player's hand. You draw a card at the beginning of the next turn's upkeep.

{1}{B}, Sacrifice a creature: You gain 1 life and draw a card.

Sacrifice a creature: Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

{1}{W}{B}: Target creature gains lifelink until end of turn.

{1}{W}{B}: Whenever you gain life this turn, each opponent loses that much life.

Whenever you gain life, put a +1/+1 counter on Voice of the Blessed.

As long as Voice of the Blessed has four or more +1/+1 counters on it, it has flying and vigilance.

As long as Voice of the Blessed has ten or more +1/+1 counters on it, it has indestructible.

Defender

When Wall of Omens enters the battlefield, draw a card.

(Gain the next level as a sorcery to add its ability.)

At the beginning of your end step, if a creature died this turn, each opponent loses 1 life.

{1}{B}: Level 2

When this Class becomes level 2, look at the top three cards of your library. Put one of them into your hand and the rest into your graveyard.

{6}{B}: Level 3

At the beginning of your end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)

{2}, {T}, Sacrifice Wayfarer's Bauble: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Flying

As long as Weatherlight Compleated has four or more phyresis counters on it, it's a Phyrexian creature in addition to its other types.

Whenever a creature you control dies, put a phyresis counter on Weatherlight Compleated. Then draw a card if it has seven or more phyresis counters on it. If it doesn't, scry 1.

When Wernog, Rider's Chaplain enters or leaves the battlefield, each opponent may investigate. Each opponent who doesn't loses 1 life. You investigate X times, where X is one plus the number of opponents who investigated this way.

Friends forever (You can have two commanders if both have friends forever.)

Whenever Zulaport Cutthroat or another creature you control dies, each opponent loses 1 life and you gain 1 life.