When Kaclang is used, Hero turns into metal, becoming immune to all damage for a limited time. The transformation also renders him unable to move or attack at all and the effects of this spell can’t be cancelled early. If used in the air, Hero will fall to the ground, which can result in self destructs. It can also hit opponents if he falls on them in this state. Hero can be one-hit-KO'ed by another Hero using Metal Slash in this form, and this is easily punisheable by any other character that simply charges a Smash attack and waits for Hero to stop being immune. It is very situational and can only really be useful to be safe from powerful items like Dragoon or Daybreak.