MTG arena, On turn 3 or 4, player plays Thassa's oracle and instantly won the game. Player did not have less than X devotion to blue cards in their library (had a devotion to blue of like 3 or something). When the game ended it showed the player had 91 cards in their hand, but no cards they played would have enabled them to have 91 cards in their hand and basically 0 in their library.