When to use Flare?

[Raestloz]

very much agreed. Will also say at all cost try to avoid to flare after a transpose.
As you do larger group of enemies you can then be doing triple flares

I once do a combo of 7 Flares. Initial, convert, transpose (got 2), X ether, transpose (got 2)

I got lucky and my MP regenerated precisely after the Flare empties my MP, happened twice. Felt glorious