I well remember posting a 3D Animated lockscreen theme for MIUI called the Kakashi 3D LS by Leeson a few weeks ago. Here is another 3D LS theme for your Android device on MIUI GB or V4. The 3D Warrior Animated MIUI LS Theme has been made by Relentless Rain from MIUI China.
The themes appears to be a modified version of the Kakashi theme, yet it is distinct from its predecessor. In the idle state, you see animated fire flames, but the real magic begins when you try to unlock the device by dragging the red circle time panel downward.