I strongly disagree.
Dreamstone Amulet gives a very nice bonus that at least 1 party member should have, and if they can negate invisibility then all the better.
The Dreamstone Weapon is not only decent on it's own, it's only 1 level higher than a simple +3/+4/+5/+6 weapon for it's secondary effect, but it actually has a really good secondary effect. Attacking Fort/Ref/Will with a Weapon gives you an advantage already, but if you include an ability like Terrifying Insight from the Divine Oracle path, it gets downright brutal.
1/day make an attack hit? Yes, please.