Haha, all right! Well, if the novel is huge, then you definitely need a couple of paragraphs to give readers a taste of what they're getting into.
I don't think your big blurb is that long! It's just that it focuses too much on Suren's internal turmoil, and without knowing who she is, or what her world is, the reader is going to have a hard time relating to her or understanding what the novel's conflict is supposed to be.
Only when I re-read the blurb for a second time on your carrd, did I notice the mad prophet erased from history, which - as a reader who knows nothing about your story - is the most interesting detail at first glance. If you think about it, all protagonists and all worlds are tortured in some way, that's what generates conflict. So in your blurb you have to focus on that one spark in your story that makes it stand out from the usual fare in similar genres.
I'm going to attempt a re-write based on my understanding of your story so far, you are free to use it however you like, or ignore it completely haha:
Sorrowful princess Suren is growing fed up with seeing her people suffer under the old rule.
A dynastic thirst for power has ruined generations of royals, and the realm along with them. Before she loses herself completely, however, Suren makes a terrible discovery: a danger prophesied by a madman erased from history is now all too real.
Suren must find her strength to finish what the mad prophet had started. She must fight for the sake of her people. As she journeys through the Jade Kingdom, gathering allies, the princess realizes she is far from alone in her sorrow. The time has come for change and Suren will see to it that history remembers.
Hope that helps!