Answered Prayers

Whenever a creature you control enters, you gain 1 life. If Answered Prayers isn't a creature, it becomes a 3/3 Angel creature with flying in addition to its other types until end of turn.

Priest of Ancient Lore

When Priest of Ancient Lore enters, you gain 1 life and draw a card.

Impassioned Orator

Whenever another creature you control enters, you gain 1 life.

Plains

Revitalize

Sanctify

Destroy target artifact or enchantment. You gain 3 life.

Union of the Third Path

Draw a card, then you gain life equal to the number of cards in your hand.

Kor Celebrant

Whenever Kor Celebrant or another creature you control enters, you gain 1 life.

Anafenza, Kin-Tree Spirit

Whenever another nontoken creature you control enters, bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Ajani's Pridemate

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

Light of Hope

Choose one —
• You gain 4 life.
• Destroy target enchantment.
• Put a +1/+1 counter on target creature.

Daxos, Blessed by the Sun

Daxos's toughness is equal to your devotion to white. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.)
Whenever another creature you control enters or dies, you gain 1 life.

Thriving Heath

Thriving Heath enters tapped. As it enters, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

Riot Control

You gain 1 life for each creature your opponents control. Prevent all damage that would be dealt to you this turn.

Congregate

Target player gains 2 life for each creature on the battlefield.

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Inspiring Overseer

Flying
When this creature enters, you gain 1 life and draw a card.

Sun Titan

Vigilance
Whenever Sun Titan enters or attacks, you may return target permanent card with mana value 3 or less from your graveyard to the battlefield.

Bond of Discipline

Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn.