"The Lonely Assassins, that's what they used to be called. No one quite knows where they came from, but they're as old as the Universe, or very nearly. And they have survived this long because they have the most perfect defence system ever evolved. They are Quantum Locked. They don't exist when they are being observed. The moment they are seen by any other living creature they freeze into rock. No choice, it's a fact of their biology. In the sight of any living thing, they literally turn into stone. And you can't kill a stone. Of course, a stone can't kill you either, but then you turn your head away. Then you blink. Then, oh yes, it can, listen, your life could depend on this: Don't blink, don't even blink, blink and your dead, they are fast, faster than you could believe! DON'T TURN YOUR BACK! DON'T LOOK AWAY! AND DON'T BLINK!! Good luck" -Dr. Who talking about weeping angels
A screenshot i took after getting the weeping angels mod, these guys are the scariest things you'll ever meet, turn around, and your dead! They'll also destroy your torches, bathing the area in darkness.
I ran into this particular angel while exploring a chasm, along with another angel (not pictured due to the fact that i killed it), after getting it to that position, i took a screenshot because it looked cool. but remember:
Minecraft © Mojang
Weeping angels, Dr. Who © BBC
Weeping angels mod © a_dizzle