Board Thread:Versus Debates/@comment-28635066-20160603012021/@comment-734582-20160604182744

JOA20 wrote: Wait, Jiraiya can't use Sage Transformation. His toad-like traits are a side effect of imperfect balance between the three energies required for Sage Mode It's essentially a similar thing.

It seems that a proper Curse Transform would basically be Snake Sage Mode, and so would almost certainly be equal in power. But the curse seals as Orochimaru has them are inferior products.