For two reasons:
1: If Madara is immortal because he has the first's cells, then Yamato and Danzo should be, and hell, so should the first himself.
2: If Madara is immortal, he wouldn't need to have bothered using Izanagi in his fight with Konan.
he might still be immortal, but it wouldnt make any sense.
1: If Madara is immortal because he has the first's cells, then Yamato and Danzo should be, and hell, so should the first himself.
2: If Madara is immortal, he wouldn't need to have bothered using Izanagi in his fight with Konan.
he might still be immortal, but it wouldnt make any sense.