Target player loses 4 life and you gain 4 life.

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

When Academy Rector dies, you may exile it. If you do, search your library for an enchantment card, put that card onto the battlefield, then shuffle.

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.

Pay 50 life: Aetherflux Reservoir deals 50 damage to any target.

+1: You gain 2 life.

-1: Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.

-6: Create a white Avatar creature token. It has "This creature's power and toughness are each equal to your life total."

Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

At the beginning of each end step, if you gained 4 or more life this turn, create a 4/4 white Angel creature token with flying.

Deathtouch

{1}, Sacrifice another creature: You gain life equal to the sacrificed creature's toughness.

{1}{W}{B}, Sacrifice another creature: Exile target nonland permanent. Activate only if you have at least 10 life more than your starting life total.

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

{T}: You gain 1 life. Then if you have at least 10 life more than your starting life total, transform Chalice of Life.

{T}: Target player loses 5 life.

Target player shuffles their graveyard into their library.

Draw a card.

Whenever you gain life, you may pay {1}{W}. If you do, put a +1/+1 counter on target creature for each 1 life you gained.

Each opponent loses two times X life. You gain life equal to the life lost this way.

Destroy target nonblack creature.

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

Whenever you gain life, each opponent loses 1 life.

Vigilance, lifelink

At the beginning of your upkeep, if you have 40 or more life, you win the game.

When Oblivion Ring enters the battlefield, exile another target nonland permanent.

When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

At the beginning of your upkeep, you gain 2 life.

Whenever you gain life, you may pay {1}. If you do, draw a card and each opponent loses 1 life.

At the beginning of your upkeep, if Oloro, Ageless Ascetic is in the command zone, you gain 2 life.

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

Return target creature card with mana value 3 or less from your graveyard to the battlefield.

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Double your life total. Target opponent loses half their life, rounded up.

Roiling Horror's power and toughness are each equal to your life total minus the life total of an opponent with the most life.

Suspend X--{X}{B}{B}{B}. X can't be 0. (Rather than cast this card from your hand, you may pay {X}{B}{B}{B} and exile it with X 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. It has haste.)

Whenever a time counter is removed from Roiling Horror while it's exiled, target player loses 1 life and you gain 1 life.

Whenever you gain life, target opponent loses that much life.

Serra Avatar's power and toughness are each equal to your life total.

When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)

All lands are Islands in addition to their other types.

Creatures without flying or islandwalk can't attack.

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

Equip {1}

Counter target noncreature spell. Untap up to three lands.

Flying, deathtouch, lifelink

Defender (This creature can't attack.)

Whenever you gain life, put a +1/+1 counter on Wall of Limbs.

{5}{B}{B}, Sacrifice Wall of Limbs: Target player loses X life, where X is Wall of Limbs's power.