"Daxos of Meletis was killed by a Planeswalker he loved, but he was freed from the Underworld in a cruel bargain with the god of the dead. Now he is one of the Returned, traveling across the plane of Theros in an endless search for his beloved Elspeth Tirel — but she has taken his place in the realm of the dead. His blank, featureless face is hidden behind a golden mask twisted into a grotesque caricature of his grief."
Eidolon of Longing - Cost 4
Level 1: Create an Eidolon of Longing Token.
Level 2: Create an Eidolon of Longing Token. Fetch the first Aura card from your Library.
Level 3: Create a Greater Eidolon of Longing Token. Fetch the first Aura card from your Library.
Level 4: Create a Greater Eidolon of Longing Token. Fetch the first Aura or Enchantment card from your Library.
Endless Search - Cost 12
Level 1: Pick one of the first 2 cards from your graveyard. Fetch that card.
Level 2: Pick one of the first 2 cards from your graveyard. Fetch that card. Then, the last creature card in your hand gains X mana. X is equal to your Experience points.
Level 3: Pick one of the first 4 cards from your graveyard. Fetch that card. Then, the last creature card in your hand gains X mana. X is equal to your Experience points.
Level 4: Pick one of the first 4 cards from your graveyard. Fetch that card. Then, the last Aura card and the last creature card in your hand gain X mana. X is equal to your Experience points.
Underworld Bargain - Cost 18
Level 1: You gain 6 Experience points. Then, the first opposing creature gets -X/-X. X is equal to your Experience points.
Level 2: You gain 8 Experience points. Then, the first opposing creature gets -X/-X. X is equal to your Experience points.
Level 3: You gain 8 Experience points. Then, each opposing creature gets -X/-X. X is equal to your Experience points.
Level 4: You gain 10 Experience points. Then, each opposing creature gets -X/-X and you gain X life. X is equal to your Experience points.
Experience
"Experience points can empower certain abilities of cards and Planeswalkers."
Eidolon of Longing
(White/Black) Creature - Enchantment Spirit (1/1) Token
"When you cast an Aura card: You gain 1 Experience point(s).
At the end of your turn: This creature's power and toughness become X/X. X is equal to your Experience points."
Greater Eidolon of Longing
"When you activate a Loyalty ability: You gain 1 Experience point.
When you cast an Aura or an Enchantment card: You gain 1 Experience point.