1) Become a Red Wizard, preferably an Illusionist, but without prohibited school of Illusions in other cases.
2) Get to 13th level.
3) Travel to a foreign land where few if any people know of Red Wizards.
4) Cast Simulacrum 5 times to create 5 duplicates of yourself.
5) Use Circle Magic to bump up your caster level.
6) When boosted, create many duplicates of powerful creatures up to twice your boosted caster level (i.e. the duplicates are many levels above your own). Pick powerful arcane spell casters and monsters to make duplicates of. Dragons are a good choice.
7) Use your small army of powerful duplicate creatures to take over a region big enough to gain you more gold on a continuing basis to create even more duplicates.
8) Continue your research, continue to gain experience, continue to make even more powerful duplicates as you go up levels, continue to take out more local regions.
9) Have the duplicates of yourself take over the work of constantly adding to your duplicate army.
10) Have the duplicates of yourself and other powerful spell casters start crafting magic items and performing spell research.
11) Repeat as necessary.
2) Get to 13th level.
3) Travel to a foreign land where few if any people know of Red Wizards.
4) Cast Simulacrum 5 times to create 5 duplicates of yourself.
5) Use Circle Magic to bump up your caster level.
6) When boosted, create many duplicates of powerful creatures up to twice your boosted caster level (i.e. the duplicates are many levels above your own). Pick powerful arcane spell casters and monsters to make duplicates of. Dragons are a good choice.
7) Use your small army of powerful duplicate creatures to take over a region big enough to gain you more gold on a continuing basis to create even more duplicates.
8) Continue your research, continue to gain experience, continue to make even more powerful duplicates as you go up levels, continue to take out more local regions.
9) Have the duplicates of yourself take over the work of constantly adding to your duplicate army.
10) Have the duplicates of yourself and other powerful spell casters start crafting magic items and performing spell research.
11) Repeat as necessary.