Something I do to keep my supply fresh is hoard up a couple of legendary weapons buy telematrys and spam my motes each legendary gives like 6 or so when maxed. (Easier to lvl up special and heavies) 5 marks and some motes in return so you can continue on for a good amount of time Note:If you can get a team of 3 do the omnigul strike lvl16 and kill her at the hill then wipe your guranteed 2 blues and if lucky a legendary. Takes no more than 2 mins to kill if a good team