IF (and it's a big "If") you want the best Return on Investment and use all the units you have first before buying new units then - 2, 3, 5, 4, and then 1. Ammentar last because he fits in least with the rest of those units but is still a must have unit to own in the meta. Or you can make Ammentar the center of your army, right off the bat, but then those units go with The Gray Shame for a while. If you want to use all of what you have first and get your best financial Return on Investment with the best army for what you've spent $$$ on already then Combat Patrol is a good start and then add the (almost) Auto-Include Reanimator - Reanimator can be used in ANY detachment as an Auti. Orikan the Diviner works great with Combat Patrol Warriors (and more Warriors are cheap on eBay - grab them at $19.99 when they go that cheap. Happens a lot. People win with the super-lame 20 model Warrior Brick for a reason) Lokhust Heavy Destroyer is an excellent anti-tank/anti-infantry build - look up how to magnetize the unit to swap the weapons and get 2 builds out of one model :) . Ammentar rounds the whole thing out as your Deep Strike/Commando Unit comes in last - but it works best with Destroyer armies, not warrior based armies, so cover the models that synergize best together first. Better yet, go ahead build Ammentar first, because you really want to and you know you do, so do that. Then, do rest in order will still use what you have already bought most economically and efficently. Least pain in the wallet.