The 4th level spell Mnemonic Enhancer seems a bit weird and a bit useless:
- Burn a forth level spell to get back a third or lower spell you cast the previous round.
- You prepare up to three additional levels of spells (cantrips count as 1/2 level)
However the duration for this:
the spell or spells prepared or retained fade after 24 hours (if not cast)
appears to indicate you could potentially cast this before your nights rest and then, the next day, have those extra spell levels at your disposal, however the clarification line:
You prepare and cast these spells normally.
Possibly counters this. (Although I believe it refers to how you can prepare those spells, ie you still have to sit down and learn them)
Can a Wizard cast Mnemonic Enhancer before resting, prepare those spells and the next day have those three extra levels of spells for all of the next day (minus 8 hours) ?
Or is the only effective way to use this to have it in a scroll or a wand (therefore giving you extra slots without sacrificing the 4th level slots for lower level ones)