Angel's Feather

Whenever a player casts a white spell, you may gain 1 life.

Arcane Signet

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

Patron of the Kitsune

Fox offering (You may cast this spell any time you could cast an instant by sacrificing a Fox and paying the difference in mana costs between this and the sacrificed Fox. Mana cost includes color.)
Whenever a creature attacks, you may gain 1 life.

Beloved Princess

Lifelink
Beloved Princess can't be blocked by creatures with power 3 or greater.

Ajani's Pridemate

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

Marble Diamond

Marble Diamond enters tapped.
{T}: Add {W}.

Linden, the Steadfast Queen

Vigilance (Attacking doesn't cause this creature to tap.)
Whenever a white creature you control attacks, you gain 1 life.

Archangel of Thune

Flying
Lifelink (Damage dealt by this creature also causes you to gain that much life.)
Whenever you gain life, put a +1/+1 counter on each creature you control.

Lone Missionary

When Lone Missionary enters, you gain 4 life.

Soulmender

Dawn of Hope

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.

Auriok Champion

Protection from black and from red
Whenever another creature enters, you may gain 1 life.