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Generates a D&D 5e spellbook based on the wizard class level selected.

The intent is that these can be used as loot so the DM can fairly add spellbooks without giving one character 'what they need'. To that end these spellbooks are generated from survey data and based on how common each spell is in that data, meaning the more people that take a spell the more likely that spell is to show up in this list.

Features:
Generates spells based on how common they are taken by adventurers.
Data is based on 77 submissions.
Simulates gaining spells from level 1 and up. Will never generate an imposible spell book.
When new slots are gained, prefers spells of the maximum level, but has a chance to pick lower level spells.
Your submissions to the survey effect this list. Contribute here: https://goo.gl/a2AOhT
Current restrictions:
It's possible to generate a spellbook with no max-level spells
Will only generate the minimum number of spells per level, (6 + 2 / level above first)
Mechanism for weighing spell selection at each level could be improved with more data.
There's no way to select between battle and utilty spells. This would be easy to do but I need more data.


Cantrips
Prestidigitation
Minor Illusion
Mage Hand
Fire Bolt
Light
1st level
Shield
Unseen Servant
Expeditious Retreat
Magic Missile
Fog Cloud
Tasha's Hideous Laughter
Tenser's Floating Disk
Comprehend Languages
Witch Bolt
2nd level
Invisibility
Locate Object
Cloud of Daggers
Scorching Ray
Gust of Wind
Misty Step
Invisibility
3rd level
Gaseous Form
Counterspell
Sending
tiny hut
Major Image
Sleet Storm
Wall of Water
4th level
Greater Invisibility
Dimension Door
Hallucinatory Terrain
Otiluke's Resilient Sphere
5th level
Hold Monster
Cloudkill
Cone of Cold
6th level
Globe of Invulnerability
Chain Lightning
Arcane Gate
True Seeing
Disintegrate
7th level
Whirlwind
Delayed Blast Fireball
Plane Shift
Symbol
Mordenkainen's Magnificent Mansion
8th level
Control Weather
Maze
Telepathy
9th level
Foresight