Well, this item is useful for your action economy, that's for sure.
But IMHO, with 27,000 gp it is way too expensive just for that effect.
I would use this money for another metamagic rod. Lesser quicken gets affordable. Or take multiple low-metamagic-rods like sculpt, extend or maybe chain...
IMHO, a focused diviner owns a focused conjurer.
Conjurers get too much flattered by the community.
Combine a focused diviner with some sort of spontaeneity and you count virtually as "prepared 3 divination spells per level" without the need to actually prepare divinations (and so, keep up...
I always wondered what woulb be good staple forms to make use of for different (utility) purposes.
Is there a reliable staple list for good alter self forms without going the cheesy way?
- Simbuls Spell Matrix / Sequencer / Triggerr can store a spell and cast it later as free action; depending on th spell version you use, it can allow a pool of 1 till 4 spells (compare MoF vs. PGtF vs SpC)
- Raising an Veil as Io7V as immediate action: that should give you time and hold off...