1. Config Option: An Enable/Disable option in the pixelmon.hocon file to enable/disable shadow Pokemon.
2. Shadow Trainers: Trainers who have some Shadow Pokemon that you can snag.
3. Purification: will be done via the Purification Machine, which will work in a similar manner to the Ranch Block, minus the spawning.
4. Snag Machine: since people like both Colosseum and XD i will have 2 different snag machines (provided i get the needed models).