Ajani's Pridemate

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

Plains

Inspiring Unicorn

Whenever Inspiring Unicorn attacks, creatures you control get +1/+1 until end of turn.

Pacifism

Enchant creature
Enchanted creature can't attack or block.

The Birth of Meletis

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I — Search your library for a basic Plains card, reveal it, put it into your hand, then shuffle.
II — Create a 0/4 colorless Wall artifact creature token with defender.
III — You gain 2 life.

Impassioned Orator

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