Malachi Silverclaw wrote:which would make for an epic bad guy archer/crossbowman encounter, if your group is into that sort of challenge
You can of course make an item which gives you true strike either at will (2000gp) or on command (1800gp), but it takes a standard action to activate, so you're not making any attacks at all in that round, and only the first attack (which is your highest attack bonus anyway) will get the +20, assuming you didn't make an AoO in the meantime.
I once used a whole army of goblins scattered through the forest with light crossbows and poisoned bolts. It was the weakest cheapest poison in the book.However, running around among all the others, there was one arcane trickster goblin with a true strike wand. His crossbow bolts had the most powerful poison in the book.