Wizard Arcane Thesis: Spell Substitution
This thesis breaks the rule that a day's spells are locked in, letting a wizard swap a prepared spell for a better fit mid-adventure.
You don't accept the fact that once spells are prepared, they can't be changed until your next daily preparations, and you have uncovered a shortcut allowing you to substitute new spells for those you originally prepared. You can spend 10 minutes to empty one of your prepared spell slots and prepare a different spell from your spellbook in its place.
Option Family Wizard Arcane Thesis
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