[Wids]

I haven't tried the magical tattoo feature yet, but it sounds like a way to apply the Quicken Spell feat to one particular spell, and without the need to memorize that spell four Levels higher. That could be pretty useful, but I trust that the tattoos are appropriately pricey.

Racial feats and class spell-like feats cannot be cast on the item. I don't know of any way to make them target-able, however this is meant to be for quickly recalling spells, not racial/class abilities. So if someone does find they are able to do put anything other than memorized spells on the magic tattoo item, post a bug report.

The level/duration of the spell will be at the current caster level. The caveat is you need to have it memorized, and if you don't, the spell won't be applied when you activate your tattoos. The magic of the tattoos is a way to apply a number of spells that you currently have memorized into a single, near-instantaneous casting.

So you have to have the spell memorized for it to work. For example, you memorize Stoneskin, then you get a Stoneskin tattoo, and as long as you have Stoneskin prepared and not yet cast, using that tattoo will instantly cast Stoneskin on you. But the tattoo won't work if you didn't prepare any castings of Stoneskin when you last rested, nor will it work if you already cast all of your Stoneskin spells for the day. Is this about right?

On a related note, what about clerics and spontaneous casting? Clerics can convert any prepared spells (except for Domain spells) into Cure spells and Inflict spells of the same Level; Darkness can be turned into Cure Moderate Wounds or Inflict Moderate Wounds, et al. Infusing a tattoo with an Inflict spell would be a dumb idea, of course (unless the cleric happens to be undead), but what if a cleric got a Cure Critical Wounds tattoo? Would the tattoo work as long as the cleric had any Level 4 cleric spell prepared and not yet cast?

(And can a tattoo be infused with one of a cleric's Domain Spells, come to think of it?)