Add learning new spells

The list stop at Life 3, but there are plenty of useless atks, that I would like to change them into black spells like Flood or Bio 2. Any way to learn more than those given list?

You need B-run's MMMMMagic patch. It'll take you a few days to set up, but it can expand the list of magic to 64 spells, and can allow you to have up to 16 Actors with magic lists. My hack utilizes this patch, and includes:
Virus (aka Bio 2)
Octant (1/8 HP)
Flood (Powerful water spell)
Rasp 2 (useful in the Fanatic's Tower)
Blind (since the evade bug is fixed)
Blink (like Shadow's scroll casts)
Safe 2 (full-party safe)
Shell 2 (full-party shell)
Refrsh (MP-healing spell)
Purify (heals doom, zombie, undead, frozen)