User blog comment:AzureAurelia/Improvements/@comment-26331700-20160430214724

Arena: Normal attack squad? or any unit thats hits really hard like Selena or Ultor.

Buffs: Depends on how strong the conversion stats boosts are. Also depends on how high your units' def and rec are. For high def, boosts attack relative to  def.

BB fodder and Evo materials.: Bb fodders will work from lv 1 and can  exceed lv bb/sbb. It is good to keep at least 2-4 of each evolution material to save time. If you really wanted a specific evo unit to evolve a certain unit, then you have to run the evolution dungeon.

Frontier Gate: 1 orb equals one run in frontier gate. Farm for season 2 if you can.

Imps Parades: Mifune 6*( make sure mifune has a really high attack up sphere), Mifune OE (in the future)

Trials: Trial 3, 5 and 7 are good for testing out new units. Trial ex5 and ex3 is also good.

Metal Mimics: Better to farm them.

How to decide who to evolve first: (units listed left to right show evolution preference first)

Farzen> Hadaron> Malbelle> Semira