Well ya got tattooed monk (lame), I believe the Red Wizards of Thay do something with tattoos, the only other thing i can think of it what i personally plan to do with my wizard, and thats tattoo your spells on you body essentially turning yourself into a walking spell book. Expensive but it would look so cool.
Not too sure they would like that, plus i wouldn't want to what if your fighter goes and gets himself immolated by a red dragon, now your missing like 12 pages , that and a fighter but their a dime a dozen right .
as it sits i may tweek it. mostly just add different things the tattoos can do. or just let my player attempt a tattoo and tell him if ill let him do it or not.
CREATE MAGIC TATTOO Conjuration (Creation)
Level:
Sorcerer/wizard 2
Components:
V, S, M, F
Casting Time:
10 minutes
Range:
Touch
Target:
Creature touched
Duration:
24 hours
Saving Throw:
None
Spell Resistance:
Yes (harmless)
You finish the last detail and lean back to look at your work. The tattoo looks good. It should prove useful. This spell creates a single magic tattoo. You determine the exact type of tattoo, though the selection is limited by your caster level, as indicated below. You must possess a modicum of artistic talent to sketch the desired tattoo—at least 1 rank of Craft (drawing), Craft (painting), Craft (calligraphy), or a similar Craft skill. Inscribing a magic tattoo requires a successful Craft check. The DC varies with the kind of tattoo, as noted below. If you are a 3rd- to 6th-level caster, you can inscribe a tattoo that generates any one of the following effects (Craft DC 10). • +2 resistance bonus on one type of saving throw (Fortitude, Reflex, or Will). • +1 luck bonus on attack rolls. • +1 deflection bonus to AC. At 7th to 12th caster level, you can add the following tattoos to the list that you can inscribe (Craft DC 15). • +2 resistance bonus on saving throws. • +2 competence bonus on attack rolls. When your caster level reaches 13th, you can add the following to the list of tattoos you can inscribe (Craft DC 20). • Spell resistance equal to 10 + 1 per three caster levels. • +2 enhancement bonus to any one ability score. • +1 spellcaster level. This effect increases the subject’s effective level, but not the total number of spells. For example, an 11th-level caster who receives this tattoo functions as a 12th-level caster for the purpose of determining level-based spell variables (such as range, area, effect, and so on), but he does not receive any extra spells. A single creature can have only three magic tattoos at a time. Any attempt to apply more than that automatically fails. A successful
erase spell removes a
single magic tattoo. A successful
dispel
magic
spell can remove multiple magic
tattoos if targeted on the creature bearing them.
You might also want to take a look at the Runescarred Berserker in Unapproachable East. Basically a mystic Barbarian who carves magical runes into his own skin (works like magic item creation, which you are considered to be able to do for this purpose). These runescars work like scrolls for you, and you are considered able to cast the spells (from a small, but very interesting and powerful list) for the purpose of activating your own runescars.