*doesn't understand the question*
Are you saying someone chained SS to MR, and EP to SS? The chain would be as such:
1.
Monster Reincarnation activates, pay the discard.
2.
Serial Spell activated, pay the discard.
3.
Emergency Provisions activates, send both cards to the grave.
------------------->>>>>>
3. EP resolves, you gain 2,000 Life points.
2. SS resolves, return a monster to your hand.
1. MR resolves, return another monster to your hand.
Remember that the monster would be chosen at the activation of
Monster Reincarnation, not resolution, so you would be unable to return one of the mosnters discarded for SS.