Hi Cassie! I have to preface this question with the HIGHEST of praises for this fantastic shadowhunter world you have created! So Clary and Magnus both had visions of Idris running red with blood. If Clary gets visions because of her angelic power why does Magnus also get these visions? Also, as we saw in LoS in the Unseelie lands rivers are filled with blood. Does the blight that's starting to spread in Idris imply we will see their vision come true in QoaaD? What does this mean for our heros?
I love WHAT DOES THIS MEAN FOR OUR HEROES? It reminds me of classic comics!
Remember that Magnus is a really interesting warlock because his father was a Greater Demon — remember when he took that witchlight from Alec in CoLS and it started to glow? Asmodeus is a prince of Hell — a fallen angel. Angels and Greater Demons are not as un-alike as they would often like to think. Lucifer was after all, God’s most beautiful angel: You were the seal of perfection: full of wisdom and perfect in beauty.*
As Cristina points out, the rivers of Faerie having blood in them may not be new — Mark quoted Tam Lin to Emma in Lady Midnight: and all the blood that’s shed on earth, runs through the springs of that country (Faerie.) That has a lot to do with Faerie’s connection to the mundane world and the idea of the mundane world’s evils spilling into Faerie. We’ll learn more about the blight in Queen of Air and Darkness, but perhaps it’s Faerie’s turn to spill evils back into the mundane world?
* (Ezekiel 28:12)