I thought about how many times you could use a spell(I thought about Ultima).And then I thought about that:
Equipment:
Every Character with his/her best weapon(8 Slots) and a Wizard Bracelet(8 Slots).
in the first 2 slots:Quadra Magic + Ultima
second 2 slots:2x Magic + -(you can choose whatever you want)
every other 2 slots:Mimic + Combi-command(or so)

In battle:
one character uses 2x Magic ultima (Because of quadra Magic 8 times ultima).Then everyone uses Mime.He/She will mime 6x the last turn.That means 6x8 times Ultima (48 times) for each character!!!