Eren_fraser
Well to be fair domains over dreams and trickery if mastered to their full potential can be devastatingly powerful and I'm talking Mad Jim Jaspers level powerful (who could possibly oneshot cosmic entities in Marvel at will). They aren't initially strong and lack attack power (compared to elemental powers like lightning, fire and water to name a few) but have a wider range of application and are closer to manipulating all of creation to their will. As in the sandman series not even lucifer (the 2nd strongest guy in DC)with her anti life powers could destroy dreams as doing so would condemn all of creation but also herself to become an existence lacking HOPE for anything for her future. And an existence lacking 'hope' is just an empty husk.
Exactly, in sandman Lucifer can defeat Morpheus but he doesn't, if he does he himself would lose his dream/hope. Luci may be the second most powerful being, but he is subject to the rules of infinity and creation.
Danteuros:Firstly SHE can(you've obviously not watched the sandman series) it is not about ability but rather will. And do you think lucifer cares about her father's creations yes but in the comics luci like nearly destroyed the world many times. For beings of their level destroying creation and restructuring part or all of it is a matter of will. But losing all hope of recreating the world after destroying it is something she cannot do as she would lose the very meaning of her existence.