This was easy..did it against wheeler lvl 10 used
1 x Perf. ult. great moth 3 x Petit moth 1 x Cocoon of evo 1 x Resonance insect (2 get grt moth) 2 x Sangan (to get cocoon and petit fast) 2 x gokipon 1 x Sphere kuriboh 3 x Des mosquito (for skill "Insect uprising" 1 x Wonder Balloons (MOST HAVE!!!Petit cant die) 2 x shard of greed 2 x Paleozoic Hallucigenia&Canadia 1 intrigue SHD 1 Wall disrupt
I was in the same boat a few hours ago. as if the game knew i needed p.u.g.m and cocoon. I even used 50 gems after that on the insect box and hot the UR super cocoon or whatever that lets you special summon it from your deck ignoring it's conditions.
But, that does not count for this mission. this game is weird like that, like it knows what you are after. I set rewards to x3 and used result boost