Namarie is too easy to abuse since it does not clog your hand, and it's too reusable. Also, it can pick off the conditions you really need off the table, whereas
Sleep Caradhras costs an exertion, more twilight and nukes your own conditions, and
Deep in Thought also costs more and is more difficult to pull off, since it needs a but of work. Not to mention, there MIGHT be some instances where yu want SOME shadow conditions off the table, but not ALL of them, since they might be crippling them more than helping. Last, but not least,
Namarie has no spotting requirement at all, meaning you can play it in any deck that has hunters in it. DOn't get me wrong, I think the card is awesome, and I like splashable cards to make people think outside the box a little, but perhaps it should have a built-in clause that prevented you from adding tokens to it, and/or it could be a unique card.