can someone who has completed Prejoran Motives post what the artifact does...thanks

It gives you an artifact that gives you 2 deck spaces. Its very useful if you get all 5. 10 free deck spaces kicks ass.

Yes, it works exactly like the ship-bot artifact, except that it's free, which makes it pure awesome in a can. I certainly plan on completing this mission.

2000 energy is a lot of energy for 2 deck spaces.. I got one. I'm only about level 50. But, it would take at least 1 or 2 levels just to get the +2. Maybe if I were a higher level it would seem more useful, and I do wonder if I should get it knowing I'll eventually be a higher level.. but, really, 2000 energy.. if it were the same 1000 energy as the other artifacts, I may be more willing to do an additional run. But, now I'm not leveling as fast.

unless my math is wrong, its 1250 energy....does that make it worth more?

Hmm, duh, I really fail at math these days. Yeah, 1250 is a bit better.. Really dunno how I figured it doubled in 'cost'. Maybe I'll try for a 2nd.. the other missions aren't going anywhere.

Yep, and as far as being worth it, 1250 is slightly more than 3 full loads of energy for me at rank 62. It'll take several days, but +10 decks for about 16 energy loads = big win for me. And like you said, those other missions will still be there!

I agree.. I finished the 5 complete runs for 10 decks.. Very worth it indeed.

im on 4/5. ill have my last one tomorrow it takes about a day or so for me to get 1, but i started early. its well worth the energy even though the XP efficiency sucks.