Our group is playing rise of the runelords, and we are about to fight the final boss of the second book. We know she´s in the clock tower and know she can fly and likes to throw people to the floor but our gm said the boss is a little overpowered and the encounter will be very hard.
We plan on using lots of scrolls (we have spellcasters but we want to save spell slots for the fight) of bear's endurance , bull´s strengt, haste, false life, owl wisdom, fly, see invisibility, protection from evil and even a extract of true strike to each of us thanks to our alchemist. The alchemist also hast tanglefoot bombs so if he manage to hit her, she wont be able to cast spells.
May this be enough to kill her? or is a money waste in scrolls? Any advice?