airwalkrr
Adventurer
James Jacobs' reply in Dungeon was a good answer to the question of Iuz's CR. In the first place, PCs should never fight gods to "defeat" them. So asking how high level the PCs need to be to reasonably expect to defeat Iuz is a bit silly. PCs can occassionally thwart a deity's plans however, and the guideline James Jacobs cites from the D&DG is a good one to use.