Unknown (erratum vs. non-erratum)
78 #1: You use the Power of Elementalism here, but you don't have to pay any WP! Proposed footnote: "As you are using your Power of Elementalism against the Chaos-birds, you should deduct 1 WILLPOWER point."
148 #1: You use your Wizard's Staff here, but you don't have to pay any WP! Proposed footnote: "As you are using your Wizard's Staff against the Jahksa, you should deduct 2 WILLPOWER points."
2 WP is normal for ranged attacks with the Staff.
205 #1: There's a serious problem with choice #2 here: Section 78, which it leads to, described the use of Elementalism against the birds, and nothing about Sorcery! The best option seems to be to change it to a choice to use Elementalism, like the other choices that lead to 78. That is, something like: If you possess the Magical Power of Sorcery, have more than 6 WILLPOWER points remaining, and wish to use your Power to move the Ethetron -> If you have the Magical Power of Elementalism and wish to use it