When Thassa's Oracle enters, look at the top X cards of your library, where X is your devotion to blue. Put up to one of them on top of your library and the rest on the bottom of your library in a random order. If X is greater than or equal to the number of cards in your library, you win the game. (Each in the mana costs of permanents you control counts...
When Kroxa enters, sacrifice it unless it escaped.Whenever Kroxa enters or attacks, each opponent discards a card, then each opponent who didn't discard a nonland card this way loses 3 life.Escape—, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
When Ox of Agonas enters, discard your hand, then draw three cards.Escape—, Exile eight other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)Ox of Agonas escapes with a +1/+1 counter on it.
When Uro enters, sacrifice it unless it escaped.Whenever Uro enters or attacks, you gain 3 life and draw a card, then you may put a land card from your hand onto the battlefield.Escape—, Exile five other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)
Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)At the beginning of the end step, sacrifice Underworld Breach.
Each nonland card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)At the beginning of the end step, sacrifice Underworld Breach.
(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)I — Create an 8/8 blue Kraken creature token with hexproof.II — Tap all nonland permanents target opponent controls. They don't untap during their controller's next untap step.III — Gain control of target permanent an opponent controls. Untap it.