A few fimbuls. Then grab a free Varuna during Why the Sky is Blue part 2.
Here's what they look like.
Fill your grid first, you usually want 5 or 6 of your elements magna weapon of choice.
It's pretty unlikely that you'll be able to spark Cag.
You should replace the cortana with something else. The hellward dagger isn't worth it but at least it doesn't take away your HP.
We still don't know who this is supposed to be.
He was right to quit.