I appreciate the many people that tried to discuss how to best use Malicna. Her shortcomings and strengths, the forum needs more of that, it helps the noobs and may even illuminate something for the mid to long term players.
One thing about her is certain. If you don’t like uncertainty, then Malicna isn’t going to be enjoyable for you to use.
She has a decent hit and an excellent elemental link. The elemental link boosts her appeal in mono, if running rainbow she adds very little via that channel.
I like the way @Homaclese rewrote her special and think that is a healthier way to think about it.
If you are building a team around her, she does make it difficult to plan since each of her three options synergize best with different specials. Therefore, rather than building around her, try and find a team where her hit and mana boost will fit will and the others are all nice extras. So a 3-2 team with her as part of the three could work very well.
If I had unlimited options in dark, yes, there are many others I would prefer. Most of us are not in that situation. Few heroes in my roster are the #1 option in their element (my #1 may not be someone else’s #1 either so there is that).