90% sure that he is talking about the ninjas that increase the mystery cooldown of their opponent's ninja by 1 turn. As far as I know we don't have any yet that can do it but here's the list that I could find that may come eventually:

Jiraiya [Sage Mode] (Chase +1)

Hashirama [First Hokage] (Chase Y)

Tobirama [Second Hokage] (Chase Y)

Temari [Swimsuit] (Mystery Y)

Sasori (Chase Y)

Deidara [Edo Tensei] (Chase Y)

Pain [Shurado] (Mystery +1)

Pain [Gakido] (Chase Y)

Mei Terumi [Fifth Mizukage] (Chase Y)

Mifune (Chase Y)