Blossoming Sands

This land enters tapped.
When this land enters, you gain 1 life.
{T}: Add {G} or {W}.

Healer of the Glade

When Healer of the Glade enters, you gain 3 life.

Soul Warden

Whenever another creature enters, you gain 1 life.

Plains

Celestial Unicorn

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

Campfire

{1}, {T}: You gain 2 life.
{2}, {T}, Exile Campfire: Put all commanders you own from the command zone and from your graveyard into your hand. Then shuffle your graveyard into your library.

Cathedral Sanctifier

When Cathedral Sanctifier enters, you gain 3 life.

Forest

Jaddi Offshoot

Defender
Landfall — Whenever a land you control enters, you gain 1 life.

Snake Umbra

Enchant creature
Enchanted creature gets +1/+1 and has "Whenever this creature deals damage to an opponent, you may draw a card."
Umbra armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Pride Guardian

Defender
Whenever Pride Guardian blocks, you gain 3 life.

Essence Warden

Goldenglow Moth

Flying
Whenever Goldenglow Moth blocks, you may gain 4 life.

Soul's Attendant

Whenever another creature enters, you may gain 1 life.

Wall of Hope

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