I am absolutely terrible at Ex-Keine's spellcards. All three of them, and more often than not they're what ruin my Extra runs. I know how to do them, dodge the thingies then stream, and for Returning-Bridge Ichijo just weave around. But I die. Why do I die? I don't know.
Also, I have never actually killed the Uberfairy right before Mokou without bombing/dying.