Question

the champions have to have skills (add question tag)​

Answer 1

Answer:

The champions have to have skills,haven't they?

Answer 2

Answer:

The champions have to have skills, don't they?

Explanation:

#Not all question tags consist of the verb used in the core sentence. The question tag must contain an auxiliary verb, if there isn't any auxiliary verb, introduce "do". even though we have "have" here, we will use do form of the verb.

hope it helped. :)