Why does an icandescent magnet can't attrach iron ?

Answer 1

No one has answered for 5 hours probably because no one has heard of an incandescent magnet.

A permanent magnet is usually formed from cooling a ferromagnetic material in the presence of a strong magnetic field. The field causes the individual magnetic domains to align parallel to the field. When the material cools and solidifies, these small particles are no longer free to move.

If you heat such a magnet enough for it to incandesce, the tiny particles are again free to move, and will randomize their orientation to minimize the total energy of the system.