Wow..this escalated quickly. Anyways to add some more clarification(always helps) the wild shape has also been amended in tandem with being swift cast that I take on all abilities of the shape taken. I will also be able to shift into anything up to 2more HD than myself(as opposed to just the same HD). That being said what shapes at level 10 would allow me to best use this ability?
Take Surrogate Spellcasting and cast regardless of the form you assume. Or assume a form that has hands/claws and can speak (like dragons) and retain casting anyway.
As for shapeshift into anything, does that mean
anything or do you mean any animal? Also all ability scores or all Ex/Su/SLA/etc.?
If you can turn into anything, as well as get all the powers; consider picking an outsider with racial spell casting. Trumpet Archon has 12 hit dice, and casts as a 14th level cleric. Another option would be a Tome Dragon of 12 hit dice, which has 9th level sorcerer casting and metamagic reduction. Maybe later in the campaign turn into a Modron that has 20th level sorcerer and cleric casting and monk features.
Here's the Handbook I work on with eggynack, just so you know:
https://docs.google.com/document/d/1tvNDnsnzj4dOkkYwxl1iGTeTNnQ5PK3geufSX5DwyYo/editthe DM isnt limiting the creatures you have access to? It sounds as if he is simplifying the build for you because your new. The Druid is probably the single most player intensive class there is. You have spells, not the best, but a full caster nonetheless. Your magics can be very simple or extremely complex, the druid can get away, if not outright shine in a campaign with limited access to magicals. wildshape this is more complex in and of itself than any other class. SNA this by its lonesome can and often is more complex than most other classes. Then you have your natures ally basically making another pc albeit lower level.
So i think it safe to say the Druid is hands down the most complex class to play..TAKING TIME OUT OF CAMPAIGNING!!! I think your DM is trying to simplify things by pigeon holing you into a a wildshaping specialist and removing spell casting while in alternate form will certainly limit your decision making, thusly speeding things up. So all the planar Shepherds stuff probably aint going to fly!
I think DM is going for a "less is more"
Blightersbane
Planar Shepard would totally fly, Spell-Like abilities are different from spells and they always function as if they were silenced and stilled so they can be used regardless of form.