From publisher blurb:
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This issue?
The original magic-user had a very limited spell list with spells that were very focused on utility in a dungeon.
The original magic-user only had 8 first level spells, 10 second level spells, and 14 third level spells.They have 12 fourth level spells, 14 fifth level spells and 12 sixth level spells.
This gives them a grand total of 70 spells
A magic user in a second edition game has access to over 2,174 spells.
So how do the effects of magic help solve this problem? They introduce costs into being a wizard. Yes, they also give the wizard “extra power” but they do so unilaterally, meaning, also while you are walking through town or the dungeon, not just in combat.
Do you have protection from evil memorized? Congratulations on leaving a trail of chalk dust through the dungeon. Memorize water breathing? drooling next to the fighter while he talks with hobgoblins is going to weird them out. Do you have Wall of Fire prepared? Enjoy your walk through small villages with exclusively wooden buildings.