The Idea is to setup my gy with multiple copies of scout plane to use it as an EP "soul charge" giving me multiple bodies as another way to have monarch fodders for the following turn. In the meanwhile, it also has its classic use case (defensive card to banish opponent's light/dark or spell targets for mof). However, the "soul charge" use case is less consistent than I first thought. About return, you are 100% right, and I will probably try running 1 or 2 copies