Whenever a creature enters the battlefield under your control, you gain 1 life. If Answered Prayers isn't a creature, it becomes a 3/3 Angel creature with flying in addition to its other types until end of turn.

{2}, {T}, Sacrifice Armillary Sphere: Search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle.

{T}: Add {C}.

Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

The next time target creature would deal damage this turn, prevent that damage. You gain life equal to the damage prevented this way.

Defender

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Flying

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

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

When Basri's Acolyte enters the battlefield, put a +1/+1 counter on each of up to two other target creatures you control.

Look at the top four cards of your library. Put two of them into your hand and the rest into your graveyard. You lose 2 life.

Each opponent loses 3 life. You gain life equal to the life lost this way.

Bojuka Bog enters the battlefield tapped.

When Bojuka Bog enters the battlefield, exile target player's graveyard.

{T}: Add {B}.

Destroy target creature that isn't enchanted. It can't be regenerated.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

Enchant creature

When enchanted creature dies, draw three cards, then discard one of them.

Whenever you gain life, put a +1/+1 counter on Celestial Unicorn.

{W}, {T}, Discard a card: The next time a source of your choice would deal damage to target creature this turn, prevent that damage.

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

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

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

When Conclave Phalanx enters the battlefield, you gain 1 life for each creature you control.

Target player gains 2 life for each creature on the battlefield.

Corrupt deals damage to any target equal to the number of Swamps you control. You gain life equal to the damage dealt this way.

At the beginning of your upkeep, Creeping Bloodsucker deals 1 damage to each opponent. You gain life equal to the damage dealt this way.

Exile all creature cards from target player's graveyard. You gain 3 life for each card exiled this way.

{X}: Crypt Rats deals X damage to each creature and each player. Spend only black mana on X.

Return X target creature cards from your graveyard to your hand.

Enchant creature

When enchanted creature dies, its controller loses life equal to its power and you gain life equal to its toughness.

Whenever another creature dies, you may gain 1 life.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

Sacrifice a creature: Regenerate Dimir House Guard.

Transmute {1}{B}{B} ({1}{B}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)

{T}: Target creature gets -1/-1 until end of turn.

{4}{B}{B}, {T}, Sacrifice Disciple of Tevesh Szat: Target creature gets -6/-6 until end of turn.

You gain 2 life for each creature target player controls.

Suspend 5--{1}{W} (Rather than cast this card from your hand, you may pay {1}{W} and exile it with five time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)

Destroy target nonblack creature.

Whenever you gain life, each opponent loses 1 life.

{T}: Add {C}.

{1}, {T}, Sacrifice Esper Panorama: Search your library for a basic Plains, Island, or Swamp card, put it onto the battlefield tapped, then shuffle.

Enchant creature

Enchanted creature has lifelink and "Whenever a creature an opponent controls dies, put a +1/+1 counter on this creature." (Damage dealt by a creature with lifelink also causes its controller to gain that much life.)

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

Exile target nonwhite attacking creature. You gain life equal to its toughness.

You gain 2 life for each creature you control.

{3}{B}, Sacrifice Font of Return: Return up to three target creature cards from your graveyard to your hand.

{2}{W}, Sacrifice Font of Vigor: You gain 7 life.

Forsaken Sanctuary enters the battlefield tapped.

{T}: Add {W} or {B}.

Target opponent loses 1 life for each attacking creature you control. You gain that much life.

Goldmire Bridge enters the battlefield tapped.

Indestructible

{T}: Add {W} or {B}.

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 {B} in the mana costs of permanents you control counts toward your devotion to black.)

{T}: Add {C}.

{1}, {T}, Sacrifice Grixis Panorama: Search your library for a basic Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Harsh Sustenance deals X damage to any target and you gain X life, where X is the number of creatures you control.

Icatian Moneychanger enters the battlefield with three credit counters on it.

When Icatian Moneychanger enters the battlefield, it deals 3 damage to you.

At the beginning of your upkeep, put a credit counter on Icatian Moneychanger.

Sacrifice Icatian Moneychanger: You gain 1 life for each credit counter on Icatian Moneychanger. Activate only during your upkeep.

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

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

Flying

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Enchant creature

At the beginning of the end step of enchanted creature's controller, that player sacrifices that creature.

When Makeshift Binding enters the battlefield, exile target creature an opponent controls until Makeshift Binding leaves the battlefield. You gain 2 life.

Counter target spell unless its controller pays {1}.

Whenever you gain life, each opponent loses 1 life.

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

Mortuary Mire enters the battlefield tapped.

When Mortuary Mire enters the battlefield, you may put target creature card from your graveyard on top of your library.

{T}: Add {B}.

{T}: Add {C}.

{1}, {T}, Sacrifice Naya Panorama: Search your library for a basic Mountain, Forest, or Plains card, put it onto the battlefield tapped, then shuffle.

Orzhov Basilica enters the battlefield tapped.

When Orzhov Basilica enters the battlefield, return a land you control to its owner's hand.

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

You gain 2 life for each creature you control.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

Scry 2, then draw two cards. You lose 2 life.

You gain 1 life for each creature your opponents control. Prevent all damage that would be dealt to you this turn.

Enchant creature

Enchanted creature has "{B}: This creature gets +1/+1 until end of turn."

When enchanted creature dies, return that card to the battlefield under your control.

Target player draws two cards and loses 2 life.

Silverquill Campus enters the battlefield tapped.

{T}: Add {W} or {B}.

{4}, {T}: Scry 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.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

Each other player discards a card. You draw a card for each card discarded this way.

Syphon Soul deals 2 damage to each other player. You gain life equal to the damage dealt this way.

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

Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)

{B}, Discard a creature card: Return target creature card from your graveyard to your hand.

Exile target creature.

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

{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.

You gain life equal to the number of creatures on the battlefield plus the number of artifacts on the battlefield.