Board Thread:Versus Debates/@comment-32617252-20171028231750/@comment-9782468-20171108041253

@TheKillman, the jutsu was set, but not activated. The drawbacks only occur after the jutsu has activated and its effects have taken place.

Madara sealed the jutsu. The requirements was that he had to die, and the seal was set so it would activate only a certain amount of time after his death. The Izanagi itself was simply making the Madara who died a permanent Kage Bunshin, instead of the real one.

The only way the jutsu would ever activate and give any drawbacks is if Madara died.