She is the level 32 reward evolution for Fate's Witness.
This card has a low power/health ration for being an expensive card. However, it does have an upside. On the chance, after the card has been put into play, that the next card drawn, due to the "summon, draw a card," is a prophecy card, it has 0 cost, and can be played immediately. If this card is summoned after a rune lost, it can be played immediately for 0 cost, possibly giving the chance of 2 prophecy cards being played with 1 rune loss. Alternatively, this card may be put into the player's hand if they choose.