Leonin Elder

Whenever an artifact enters the battlefield, you may gain 1 life.

Kraken's Eye

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

Wurm's Tooth

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

Throne of Bone

Whenever a player casts a black spell, you may pay {1}. If you do, you gain 1 life.

Paradise Plume

As Paradise Plume enters the battlefield, choose a color.
Whenever a player casts a spell of the chosen color, you may gain 1 life.
{T}: Add one mana of the chosen color.

Golem's Heart

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

The Gaffer

At the beginning of each end step, if you gained 3 or more life this turn, draw a card.

Soul Warden

Whenever another creature enters the battlefield, you gain 1 life.

Sanctify

Destroy target artifact or enchantment. You gain 3 life.

Prism Ring

As Prism Ring enters the battlefield, choose a color.
Whenever you cast a spell of the chosen color, you gain 1 life.

Wooden Sphere

Whenever a player casts a green spell, you may pay {1}. If you do, you gain 1 life.

Peace of Mind

Warmth

Whenever an opponent casts a red spell, you gain 2 life.

Auriok Champion

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

Iron Star

Whenever a player casts a red spell, you may pay {1}. If you do, you gain 1 life.

Urza's Chalice

Whenever a player casts an artifact spell, you may pay {1}. If you do, you gain 1 life.

Shattered Angel

Flying
Whenever a land enters the battlefield under an opponent's control, you may gain 3 life.

Ivory Cup

Whenever a player casts a white spell, you may pay {1}. If you do, you gain 1 life.

Angel's Feather

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

Celestial Force

At the beginning of each upkeep, you gain 3 life.

Kor Firewalker

Protection from red
Whenever a player casts a red spell, you may gain 1 life.

Soldier of the Pantheon

Protection from multicolored
Whenever an opponent casts a multicolored spell, you gain 1 life.

Sunscorch Regent

Flying
Whenever an opponent casts a spell, put a +1/+1 counter on Sunscorch Regent and you gain 1 life.

Rewards of Diversity

Whenever an opponent casts a multicolored spell, you gain 4 life.

Demon's Horn

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

Cleric Class

(Gain the next level as a sorcery to add its ability.)
If you would gain life, you gain that much life plus 1 instead.
{3}{W}: Level 2
Whenever you gain life, put a +1/+1 counter on target creature you control.
{4}{W}: Level 3
When this Class becomes level 3, return target creature card from your graveyard to the battlefield. You gain life equal to that creature's toughness.

Soul's Attendant

Whenever another creature enters the battlefield, you may gain 1 life.

Crystal Rod

Whenever a player casts a blue spell, you may pay {1}. If you do, you gain 1 life.

Jeweled Torque

As Jeweled Torque enters the battlefield, choose a color.
Whenever a player casts a spell of the chosen color, you may pay {2}. If you do, you gain 2 life.