Ink-Eyes is good, but only once or twice. She usually gets in one good hit before they devote something to taking her out and preventing her from yoinking your yard.
Awesome, but Impractical. She makes a great EDH General though, for some strange reason.
EDH?
Still card advantage. Unless you missed it, she's a 5-power black beatstick with regeneration. Not only is she hard to take out, but she only need to connect four times. That dude she yoinks plays defence and maybe joins in the second time.
She only gets to hit once or twice, but that's all she needs to do. And if she gets icked, you're usually up a card.
Yeah, a combination of that, and the surprise factor of ninjitsu were a draw to me. Still, you have to keep five mana open to pull that off as well.
The problem is her cost. 5 mana is not easy to get in Extended, and there is so much hate that's so easy to get (Condemn, anyone?) that she's impractical.
I've only ever played with a few people on a regular basis, and none of us were interested in tourney rules. As a result, we tended to use the most loose, basic rules for deck building (which I think were the standard of Revised Edition, when I started playing). We would limit ourselves to four of any one card, or one of the restricted cards, but we never restricted ourselves to type II or anything. So, I do have access to things like Dark Rituals and Sol Rings (well Sol Ring, singular), and the like.
That being said, sadly, I seldom get to play anymore. I picked her up toward the end of my semi-regular playing days.