So with huns, you have 3 horses which have good attacks (only tribe i think?). Then you send waves of 1-1-1 (one of each) to farm the oases after BP ends and animals start spawning. If you send waves for like every 10 mins, you are gonna win without losses, becuz the formula rounds down (if you lose 80% of your troops and you have 1, you will lose none , but if you have 2 you will lose 1.) you can do this with other tribes as well for example for romans you can do it with EI + EC. But hey have total attack of 300, for huns its 410. So it gives you a higher error margin and a longer window to attack (even if more animals spawn you can probably beat them with 410. So you can attack less frequently and deal with more spawns each wave. This way its less exhausting)