First, you can go a long way with just a lot of good quality lean protein, and the right exercises and good sleep.
Eating at least 250, and up to over 300 grams of protein a day, and some healthy fats. Then, center your exercise routine around full squats or dead lifts with good form.
:squat:
If you're doing all that and taking creatine too (whatever form works best for you), the next step would be to increase your own natural test, although the squats or deads will do quite a bit in that direction.
Test boosting supplements often come in stacks with several supplements. Do some reading on test boosting supplements. There are some decent stand-alone supplements, but no stand-alone supplement covers everything. Concentrated nettle root extract is good, 50% fenugreek might even be better, add in an estrogen suppressor, and something to help StAR along like forskolin, and you now have a powerful test booster. But there are half a dozen other supplements that could add to the effect such as high dose cissus or icariin.
Mass FX MS does look like a great over-all product though.
Read!
:gotsearch