Ahken, Amonkhet Idol

Whenever you cast a spell or activate an ability from your graveyard, you gain 1 life.
{w}{g}: Target creature in your graveyard gains embalm where embalm cost is equal to its mana cost.
Whenever you gain life, if you have 30 or more life, transform this creature and put three 1/1 white Cat creature tokens on the battlefield with lifelink.