Semi-Spoiler reply wrote:If you notice, when Ed and Al try to bring thier mom to life, all Ed loses is a leg, he loses his arm to bind Al's soul to the armor. If he had waited too long, he probably wouldn't have been able to do so.
Mnyar? wrote:But... I still don't get it. Why is it the cost of an arm? The soul is leaving the body- it's kind of akin to recreating the dead, but instead of the original body, it's in the body of something else....