Divine Favor

Enchant creature
When this Aura enters, you gain 3 life.
Enchanted creature gets +1/+3.

Staff of the Sun Magus

Whenever you cast a white spell or a Plains you control enters, you gain 1 life.

Ulcerate

Target creature gets -3/-3 until end of turn. You lose 3 life.

Serra Angel

Flying
Vigilance (Attacking doesn't cause this creature to tap.)

Witch's Familiar

Plains

Swamp

Sungrace Pegasus

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

Crippling Blight

Enchant creature
Enchanted creature gets -1/-1 and can't block.

Resolute Archangel

Flying
When this creature enters, if your life total is less than your starting life total, it becomes equal to your starting life total.

First Response

At the beginning of each upkeep, if you lost life last turn, create a 1/1 white Soldier creature token.

Child of Night

Ajani's Pridemate

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

Solemn Offering

Destroy target artifact or enchantment. You gain 4 life.

Blood Host

{1}{B}, Sacrifice another creature: Put a +1/+1 counter on this creature and you gain 2 life.

Mass Calcify

Wall of Essence

Defender (This creature can't attack.)
Whenever this creature is dealt combat damage, you gain that much life.

Wall of Limbs

Defender (This creature can't attack.)
Whenever you gain life, put a +1/+1 counter on this creature.
{5}{B}{B}, Sacrifice this creature: Target player loses X life, where X is this creature's power.

Soulmender

Sign in Blood

Target player draws two cards and loses 2 life.

Kinsbaile Skirmisher

When this creature enters, target creature gets +1/+1 until end of turn.

Staff of the Death Magus

Whenever you cast a black spell or a Swamp you control enters, you gain 1 life.

Geist of the Moors

Accursed Spirit

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Pillar of Light

Exile target creature with toughness 4 or greater.

Shadowcloak Vampire

Pay 2 life: This creature gains flying until end of turn. (It can't be blocked except by creatures with flying or reach.)