You know you can outplay them in a fair game
If the target creature is an illegal target when Vengeful Possession tries to resolve, it won't resolve and none of its effects will happen
Each time a new card name is mentioned, it is not a new design element or mechanic, it is just a self-reference
2 additional Pokmon TCG booster packs, each containing 10 cards and 1 basic Energy
Furthermore, its effects make the effort required to make it feel worth it, as it can routinely have over 8000 ATK if players build their boards correctly, making the card an amazing OTK tool
It's important that you keep the window of time that opponents can interact with the Chip as a creature as short as possible, because at that time the Chip is extremely vulnerable to interaction, and usually that'll be an interaction you don't want to occur