Life after death not possible

If life after death is not possible it does not mean that immortality is impossible because the definition of immortality usually means never dying. However, one body existing forever with out something destroying it to the point of dying seems impossible. The question is what conditions made you in the first place and why can't materialistic conditions not be duplicated? It is argued rightly that the conditions are so specific that the probability of them happening again randomly are really zero. But there are several factors that increase this probability. First what if the replication of the exact conditions are not necessary for life after death? Second, what if the universe is part of a multiverse that is infinite in size that exists forever? Third, what if the recreation process does not have to be random but can be influenced by conscious beings?