"Does the verb cast has a form as casted?"  

Yes. This may surprise you, but *grammarist* explains: 

>***[Casted][1]***  
The verb cast is conventionally uninflected in the past tense and as a past participle. **Casted  is an old form**—examples are easily found in texts from every century from the 14th to the present—but it has given way to cast in modern English. In current usage, however, **casted is gaining ground**, especially where cast means either (1) to assemble actors for a performance, or (2) to throw out bait and/or a lure on a fishing line. (Both these senses have extended metaphorical uses where casted is likewise used at least some of the time). Many people object to casted, but that doesn’t change the fact that **it is catching on and not likely to go away soon**.  
*The total votes **casted** in Uniontown on Tuesday were 1,431, which represented a turnout of 55 percent*.  [Associated Press via Real Clear Politics]  
[emphasis mine]  

And not to confuse with other 'genuine' *casted*:  

 - *Caste* hereditary class of Hindu society *v*, *adj.* ***casted***   
 - *Cast Operator: ()*   (*programming*) A type cast provides a method for explicit conversion of the type of an object in a specific situation. *v*. *cast*, ***casted***   
 - An orthopedic cast, body cast    or surgical cast, is a shell, frequently made from plaster, encasing a limb *v*, *adj.* ***casted***

  [1]: http://grammarist.com/usage/casted/