Ghost's Whisper by Ella Summers — book slip

Life has never been better for Leda Pandora, the Angel of Chaos. Married to the archangel Nero Windstriker, she commands a vast territory, surrounded by her closest friends and family.

But when Earth's magic goes haywire, blood becomes poison to vampires, witches are killed by their own potions, and beasts breach the magic barrier.

As fear and uncertainty grow, driving humans and supernaturals to violence, Leda must find a way to stop these phenomena before it leads to the end of all magic and humanity itself.

Ninth in the Legion of Angels series.