2 
3 -
1Killing 2014 thanos could rewrite the events in Guardians of the Galaxies 1 -
2Killing past nebula could nearly wipe present nebula out of existence -
3Retrieving past stones could have serious consequences to the present -
4Retrieving the 2013 mjolnir could rewrite Thor Ragnarok -
5If rogers goes back and remain in the past, then the present wouldve changed -
6Loki escaped after the battle of new york
