He is presumably human, and so does not reincarnate if killed. He is unlikely to have gotten this far with disregard for his own safety. His army immediately tearing itself apart upon his removal does not line up with there being no more internal conflicts. -and, I'm sorry, the plan is not only to assassinate him, but to get close enough to
stab him? With zero intel on his system's internal structure?
Why do you keep saying this? It is dangerous, but possible for Greengraft's military to get to Blackthorn at the same time that he does despite his two month head start.
"So they have a two month head start on us and their average speed is... well, even accounting for stopping to raid and indoctrinate and the like, we would still have to go at rash speeds to catch up with them just when they arrive at Black Thorn," your mother states, grinding her teeth in irritation at being caught flat footed like this.
The air travel is for the commando or assassination operation. Greengraft troops can go anywhere they like without concern for raiding, can even bail into the woods if necessary, carry enough supplies to last months, resupply on the fly from an intact industrial base, have beefier transports backed by the same vehicles and dragonfly scouts plus air recon, and internal lines applies if he is heading towards us. Greengraft solidly has the mobility advantage in an extended conflict where he is on the offensive.
He disrupts Mirande's readings of his entire force, and even renders his personal force so hard to detect that she would have literally been run over by them before they set off any psychic alarms. Mirande wasn't even able to successfully pick out one of the lesser patrols for her and Mag to try to blow past. Not only can't she pick him out from a crowd, her senses can't pick out
the crowd until it's right on top of her. She was virtually murdered by three surprised mutants, and now the plan is apparently to try to infiltrate a completely unknown organization composed of hundreds more, god knows whatever other abominations, as well as various battle-tested soldiers, officers, and technicians in camp, find this person we know nothing about, whose appearance we know nothing about, whose command style we know nothing about, whose court we know nothing about, whose entourage we know nothing about, and somehow get close enough to
stab him, and then get out alive.