Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate.

Whenever a creature enters the battlefield under your control, you gain 1 life.

+1: You gain life equal to the number of creatures you control plus the number of planeswalkers you control.

-2: Create a 2/2 white Cat Soldier creature token named Ajani's Pridemate with "Whenever you gain life, put a +1/+1 counter on Ajani's Pridemate."

0: If you have at least 15 life more than your starting life total, exile Ajani, Strength of the Pride and each artifact and creature your opponents control.

Flying

If you would gain life, you gain that much life plus 1 instead.

Angel of Vitality gets +2/+2 as long as you have 25 or more life.

Lifelink

When Charmed Stray enters the battlefield, put a +1/+1 counter on each other creature you control named Charmed Stray.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)

When Conclave Tribunal enters the battlefield, exile target nonland permanent an opponent controls until Conclave Tribunal leaves the battlefield.

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.

Whenever you gain life, put two +1/+1 counters on Gideon's Company.

{3}{W}: Put a loyalty counter on target Gideon planeswalker.

Target creature you control gains protection from the color of your choice until end of turn. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything of that color.)

Scry 1.

Flying, lifelink

When Hunted Witness dies, create a 1/1 white Soldier creature token with lifelink.

Flying, lifelink

Creatures entering the battlefield or dying don't cause abilities to trigger.

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

Vigilance

Whenever a white creature you control attacks, you gain 1 life.

{T}: You gain 1 life.

Target creature gets +2/+2 until end of turn. You gain 1 life for each attacking creature you control.

Whenever you gain life, put a +1/+1 counter on Twinblade Paladin.

As long as you have 25 or more life, Twinblade Paladin has double strike. (It deals both first-strike and regular combat damage.)