something random's page

Book of the Dead makes numerous references to: alignment; positive and negative energy, the necromancy school, none of which are in the game now. Also it references multiple spells that have been renamed or are not in the player core at all.
Examples from the Hallow Necromancer Archetype of things that would need removed/changed
The requirements of good alignment and able to cast at least 1 Necromancy spell.
The Hallowed Initiate can grant call the grave which is not in Player Core.
One of its feats adds chill touch, death ward, disrupt undead, disrupting weapons, holy cascade, magic stone, and sunburst.
Of which only Sunburst is in player core under those names.
Chill Touch, Disrupt Undead and Disrupting Weapons all have different names and Death Ward, Holy Cascade and Magic Stone.

I am planing a villain for my PCs to go against they are a Druid who hates civilization believes it to be a perversion of the natural order that makes people weak. There goal is to destroy buildings and other infrastructure they don't mind killing people in the process but killing people is not their goal. I want the druid to be of a level where they are an appropriate level to be a challenge for the party to take on without being unbeatable.
What spells or the like available to druids could I have them use to accomplish their goal?
I would aprecaite both high and low level spells or the like.

The feast Armor Assist with a skill check allows you to half the amount of time it takes you or an ally to don armor. However as it takes 1 minute to don light armor and 5 minutes to don heavy or medium armor, so armor assist can reduce that to 30 seconds (5 rounds) and 2.5 minutes respectively.
I can't see the time saved making a difference outside of combat and in combat it still takes to long to be a real option

Crafting any item requires a recipe. So if a character wants to craft a Personal Staff (page 166 of Secrets of Magic) unless someone in the game world has crafted the same Personal Staff before and the character can get the recipe which seams unlikely then the character would need the inventor feat or the help of someone with the inventor feat in order to get the recipe?

Is my understanding of the rules correct?

The sidebar Summoning Spells on page 73 of SoM says
"When the Master Summoner, Ostentatious Arrival, and Legendary Summoner feats refer to summoning spells, they mean spells that conjure a creature with the summoned trait. The spells that qualify from the Core Rulebook and this book are summon anarch, summon animal, summon axiom, summon elemental summon entity, summon fey, summon fiend, summon lesser servitor, and summon plant or fungus. Your GM might add other spells from future books that work like these spells."

The spells Summon Celestial, Summon Construct, Summon Dragon, amd Summon Giant are all in the Core Rulebook and function the same way as the spells on that list but are not on that list.