Flak
First appears in Book 7: This Inevitable Ruin, chapter 5 ([ 2 ])
Appearances
B1
B2
B3
B4
B5
B6
B7
B8
What you know
Book 7: This Inevitable Ruin
- Ch 5Donut's Spellbook of the Floor prize is Flak, a strong anti-air spell.
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This first turns up in Book 7. Come back when you get there.