I tried using this card a long time ago and i stopped because it is too powerful. Funny how a card made in the first expansion can still be one of the most powerful cards in the game. There is a catch though, you have to use X force. So if opponent picks up a lot of cards then it becomes difficult to use X force. This is an easy fix and all you have to do is build a deck that focuses on force generation and using M'iiyoom Onith to cause major damage is a lot easier. Its one down fall is that you could use X (which usually uses most your force for your turn) and end up paying 15 force just to see your opponents hand. So trooper and non unique alien decks will make M'iiyoom more trouble than it is worth. Overall though i think it is a card worth building a deck around.
Use it to make your opponent pick up more cards than they would want too and save up or generate enough force to use X and get a good look at your opponent hand. Most decks have unique males so the chances are you will cause some force loss and probably hurt your opponent's strategy.
Combos with other cards:
Only use this card in a deck with large amounts of force generation and ensure it will be used. It is a very weak and only has one purpose.
Ways to counteract it:
Decks that use republic, perminent pilot or non unique characters are immune. There are not too many useful unique female charaters and there are no entire droid decks for the light side. So when revealing opponents hand it is a pretty good bet they will be holding a card that will be lost.
Reveal opponent's hand
cause male cards that are unique to be lost
X can become a lot
weak battling character
Oola is the light side equivilent
Artwork and aesthetics:
I picture this creature as being what all man hating woman look like on the inside, so yeah a pretty acurate picture.
7 out of 10