We could really use some clarification on the crunchy rules of the shaman items. I am going to type a number of different questions and scenarios and maybe suggestions. Please know that when i assert taking some actions that i am not trying to rules-lawyer an unintended bonus, but only present what may be a loophole while we can still adjust the ability to work how intended without nerfing it after the fact...
These items seem to function differently than all other polymorph; the transformation itself is instantaneous, the only delay before these items was that without the coronet you have to drink the potion (which requires a standard action or free action with an item that allows drinking potion as free action). With the coronet, you can actually take a free action, sac 2 spells to polymorph, AND attack as your standard action all in one round.
If polymorphing itself is instantaneous, the new shaman items should be worded to state that they take a free action to activate (assuming that is the intention). That should maintain the intended function and be clear that the polymorph rules arent changing for anything else (ie the coronet).
On the subject of taking actions. Once you remove the cost of polymorphing, not being able to cast while polymorphed is mostly irrelevant. Even requiring a free action isnt much of a cost since you cant use items while polymorphed (ie. no free action potions, scrolls, or wands while polymorphed). So, even if you start a round in elemental form, you can drop back to human instantly (this is an established polymorph rule, please dont change it), cast a spell as standard action, then free action activate polymorph again (or some other free action and wait until next round to re-polymorph and attack).
Proposed 'fixes':
1. add 1/room to the polymorph ability on the relic (and UR).
2. Go ahead and give 'cast while polymorphed' to the relic. This may require a boost to legendary to make it feel like a bigger bonus.
3. Add the cost of a spell back to the ability.
4. Some combination of the above.
5. Leave as-is, and let players do the action gymnastics if they really want. But undestand that the 'spells while polymorphed' bonus isnt as good (mostly giving back a typically unusable free action).
I still think it would be very cool for each elemental form to get a slightly different ability (not just resistance and damage type), but i understand that you dont want to make it too complicated. ...and i am having trouble thinking up something that keeps it simple, but i will keep that process running in my brain.
The one thing that does seem simple enough is making the air elemental attack as ranged. While this does add options/versatility, it might actually be a drawback to that element since most druids probably have low ranged stats. I know that i have ignored ranged for druid since any non-melee combats i can just fire off a few spells instead of poymorphing. Giving that built in ranged attack, at worst, means some druids just wont use the air elemental, but it might actually entice druids to improve ranged stats.
10 points of resistance is REALLY strong. I feel the supreme ring has already shown how it can warp the game. However, this is only one class, and they have to pick the correct element before getting hit, so maybe it is fine.
Not that there is anything wrong with it, but i find the damage wheel progession to be...odd. all three shaman items have the same bottom half 6-7-8, the the other half goes by 3s and any increase is by 3. Is there any reason behind this?