What is the strongest boss in Warframe?
Balor Fomorian
Can you kill VOR again? You’ve finished the tutorial quest, and there’s no way to redo that at the moment, but you can always go fight Vor as a normal boss. He’ll be Mercury’s Assassinate mission (the node’s name is Tolstoj). If you mean the quest Vors prize, no you cant rerun it.
Where do I farm Morphics?
If you are playing missions, be sure to open all loot containers and lockers to increase the chance of drops.