I have reviewed the list of spells that require xp (on DnD Tools its a search option).
I have not found any that:
1 - Someone in the tournament can cast (many are 8th or 9th level cleric spells, others are arcane 9th that Luigi doesn't have)
2 - Would be able to be cast (many have casting times that preclude them from being used)
3 - Have a duel breaking effect (spells such as Alter Fortune are fine)
If anyone finds one that they are concerned about, please post.
Note that the one other spell I have found that I would limit is Death Pact, but again, no one can cast it.