The magician/mentalist displays an ordinary-looking block of wood to the audience and then places it on the table standing it on its edge.

The performer concentrates and the block is seen to move a bit to the left or to the right.

Concentrating more intensely the block suddenly falls over!

Now the block is covered with a large glass jar or pitcher making it impossible for any physical contact.

The performer concentrates once again and suddenly the block topples over!

This block is constructed by expert craftsmen and will withstand rigid examination.

Unlike other blocks, you do not have to lean this block against any objects, although you can if you wish.

In addition, you never have to guess when it will fall, because you have complete control of the operaton.

Supplied complete with block, full instructions, and gimmick.