Tip: Make a party with two of the required summon/characters + a fast group damage dealer and you can clear the character usage missions while also farming the required monsters.
Gigantoad x10
Lulu’s Lost Chapter: A New Journey Pt. 4 (Normal difficulty) has 5 Gigantoads in 3 waves, completing the mission in 2 fights.
Magic Pot x3
World of Illusion: Carbuncle’s Treasures is the only source for them. The appearance chances is totally random, but it’s easier to find them on the stages with higher SP costs.
Golden Cactuar x20
These are pretty hard to miss. :)
Thanks
To the DFFOO “Monster Hunter Guide“, an initiative to list all monster locations in the game (maintained by Marvan09).
To @xcaliblur, @mzpro2, @infinitus and @Lumine who also contributed tips for these stages in our public DFFOO Telegram group, which can be found here: