At the beginning of your upkeep, you may gain 1 life.

Indestructible

As long as your devotion to white and black is less than seven, Athreos isn't a creature.

Whenever another creature you own dies, return it to your hand unless target opponent pays 3 life.

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

At the beginning of each end step, if an opponent lost 2 or more life this turn, you may put a quest counter on Bloodchief Ascension. (Damage causes loss of life.)

Whenever a card is put into an opponent's graveyard from anywhere, if Bloodchief Ascension has three or more quest counters on it, you may have that player lose 2 life. If you do, you gain 2 life.

As Curse of Wizardry enters the battlefield, choose a color.

Whenever a player casts a spell of the chosen color, that player loses 1 life.

Whenever you cast an enchantment spell, you get an experience counter.

{1}{W}{B}: Create a white and black Spirit enchantment creature token. It has "This creature's power and toughness are each equal to the number of experience counters you have."

As Etchings of the Chosen enters the battlefield, choose a creature type.

Creatures you control of the chosen type get +1/+1.

{1}, Sacrifice a creature of the chosen type: Target creature you control gains indestructible until end of turn.

Whenever an opponent discards a card, that player loses 2 life.

When Marchesa's Decree enters the battlefield, you become the monarch.

Whenever a creature attacks you or a planeswalker you control, that creature's controller loses 1 life.

Serra Avatar's power and toughness are each equal to your life total.

When Serra Avatar is put into a graveyard from anywhere, shuffle it into its owner's library.

Enchant creature

At the beginning of the upkeep of enchanted creature's controller, that player loses 1 life.