DarkMask said:
What are the best ways to increase someone's Wisdom stat?
There are several ways, listed in decreasing order of probability:
1) Start with a race with a high Wis modifier. No standard PHB races have a Wis bonus (or penalty), but Aasimar, from MM, is pretty good for that.
2) Put all your stat increases into Wisdom.
3) Purchase a Periapt of Wisdom that you can afford. Note that these go up to +6 in the normal game. It is widely considered that epic versions are too expensive for the good they provide.
4) Purchase a Tome of Understanding. This is best done by saving up until you can get the +5 version, as inherent bonuses don't stack up. Alternately, 5 scrolls of Wish used by someone you trust with a good UMD score would also work.
5) Acquire a template that increases your Wisdom. Winged, from Savage Species, is good, as it gives +2 Wis and +4 Dex and pretty good flight speed, for a LA of +2. Any lycanthrope template gives +2 Wis as well, infected or natural; LA varies, of course. Half-celestial gives a +4 Wis and other stats and abilities for a +4 LA. Saint, from BoED, also gives +2 Wis for a +2 LA. Savage Species has rules for acquiring templates in play, which mostly involve giving semi-trustworthy high-level spellcasters lots of money.
1 and 2 are the only ones you can be sure will work. 3 and 4 are subject to DM whim on magic item availability, commercially or loot-based. Certain DMs don't believe that commerce in magic items will exist, as can be seen in the multitide of threads with titles ranging from "Magic item stores" to "Magical Wal-Marts the heck?" Even if they do allow it (most do), you can run afoul of gold piece limits; a Tome of Understanding +5 is 137,500 gp, and a standard metropolis GP limit is 100k gp.
5 is potentially problematic; many DMs will frown on attempting to acquire a template, viewing it as "powergaming." Which, let's be honest, it is. Purposely failing a Fort save for lycanthropic infection is an easy way, but alignment change may screw your build. Note that a powergamer DM will probably let you get a template fairly easily, which should be a warning sign that he's about to make you pay through the spleen for that.
Brad