I have it at a 4. The Con bonus isn't the issue for me, for if I were to build a cleric like this I'd simply get an item that boosted STR or WIS instead. And the speed is a nice perk. The duration is decent as well, long enough for most fights and encounters.
The issue for me is the extra turning. Paladins and clerics don't get all that many feats in the first place. In my two years of running 3e, I've yet to have one run out of Turn attempts -- and I LIKE undead.
It has poor synergy, as Extra Turning is a good feat for a pally/cleric with a low CHA. Makes up for it a bit. But this feat (and most divine feats) give bigger bonuses to high CHA characters and require ET. With the exception of DIvine Might, which is quite a bit better than the rest of them.
The issue for me is the extra turning. Paladins and clerics don't get all that many feats in the first place. In my two years of running 3e, I've yet to have one run out of Turn attempts -- and I LIKE undead.
It has poor synergy, as Extra Turning is a good feat for a pally/cleric with a low CHA. Makes up for it a bit. But this feat (and most divine feats) give bigger bonuses to high CHA characters and require ET. With the exception of DIvine Might, which is quite a bit better than the rest of them.