(General)
You have learned a trick that makes your spellcasting more flexible.
Prerequisites
Spell Mastery,
Wizard level 1st.
Benefit
When you prepare your spells each day, you can choose to keep a number of spell slots equal to your
Intelligence modifier (minimum 1) flexibly prepared. Instead of preparing a single spell within each of these slots, you can partially prepare two spells. Anytime after you prepare these flexible slots, you can spend a
Full-Round Action to finalize one slot, choosing one of the two spells to be finished and fully prepared in that slot.