It lets you destroy a permanent when its cast, which is nowhere near as good as Ulamog, the Ceaseless Hunger, but still strong
She can't be countered, comes back from the command zone for free, and every time a Ninja deals combat damage you reveal the top card of your library and deal that much damage to each opponent
If you take your 60-card deck and put each spell in a pile based on how much mana it costs, how many cards are in each pile
Nice and simple, but effective
It's the Magic equivalent of, "pay no attention to the man behind the curtain!" With that in mind, these are the best Pillow Fort Commanders in Magic: Sythis, Harvest's Hand & Tuvasa the Sunlit Ms
The characteristics become those of whichever side of the card is face-up or being cast