Soul's Attendant

Whenever another creature enters, you may gain 1 life.

Evangel of Heliod

When Evangel of Heliod enters, create a number of 1/1 white Soldier creature tokens equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)

Emancipation Angel

Flying
When Emancipation Angel enters, return a permanent you control to its owner's hand.

Urbis Protector

When Urbis Protector enters, create a 4/4 white Angel creature token with flying.

Alabaster Mage

{1}{W}: Target creature you control gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

Soul Warden

Whenever another creature enters, you gain 1 life.

Haazda Exonerator

{T}, Sacrifice Haazda Exonerator: Destroy target Aura.

Serene Steward

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

Lightkeeper of Emeria

Multikicker {W} (You may pay an additional {W} any number of times as you cast this spell.)
Flying
When Lightkeeper of Emeria enters, you gain 2 life for each time it was kicked.

Ruin Ghost

{W}, {T}: Exile target land you control, then return it to the battlefield under your control.

Undead Slayer

{W}, {T}: Exile target Skeleton, Vampire, or Zombie.

Wall of Faith

Defender (This creature can't attack.)
{W}: Wall of Faith gets +0/+1 until end of turn.

Blinding Mage

Angel of Mercy

Flying
When Angel of Mercy enters, you gain 3 life.

Cathedral Sanctifier

When Cathedral Sanctifier enters, you gain 3 life.

Ghost Warden

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

Umbra Mystic

Auras attached to permanents you control have umbra armor. (If an enchanted permanent you control would be destroyed, instead remove all damage from it and destroy an Aura attached to it.)

Paladin of Prahv

Whenever Paladin of Prahv deals damage, you gain that much life.
Forecast — {1}{W}, Reveal Paladin of Prahv from your hand: Whenever target creature deals damage this turn, you gain that much life. (Activate only during your upkeep and only once each turn.)

Benevolent Ancestor

Defender (This creature can't attack.)
{T}: Prevent the next 1 damage that would be dealt to any target this turn.