Its seen some fun play with one of Magic's best demons, Bloodletter of Aclazotz, and it just needs the right creature to be printed to make its clone ability something ridiculous
That means you can tap down an annoying attacker, mess with mana, or disable artifacts in a pinch
Legendary Land Mosswort Bridge Hideaway 4 (When this land enters, look at the top four cards of your library, exile one face down, then put the rest on the bottom in a random order.) This land enters tapped
For example, you may play a snow land this way only while the stack is empty during one of your own main phases, and only if you haven't played a land yet this turn
Research your card, and if that isn't there in any of the pictures of it, then you might have a really rare card that could be more than $100
In a very focused aggro deck thats trying to squeeze out the last few points of damage, its theoretically playable