Konjiki no Gash Bell!!

Synopsis

The next day, Kiyo finds out a new page has become readable revealing the third spell. Kiyo and Zatch head to a deserted area to practice the third spell Jikerudo. When cast, nothing occurs and after multiple tries, they decide to give up. On their way home, they are attacked by a Mamodo named Fein and his partner Sebe. Kiyo manages to lead them to an abandoned building to prevent any more bystanders from becoming injured. The pair manages to overwhelm Kiyo and Zatch with their super-speed spells. Kiyo places his hope on the third spell and uses Jikerudo which causes the Mamodo Fein to become magnetized. With Fein's movements becoming restrained, Kiyo and Zatch are able to burn Fein's book. Kiyo wondering if all mamodos are all that powerful tells Zatch he must become stronger.

(Source: Zatch Bell Wiki)