Scenario:
• I cast a creature
• Opponent steals this creature using Exert Influence
• I cast Gone Missing on stolen creature. Next turn I do not draw that creature.
• Two turns later my opponent casts the stolen creature.
The verbiage on the card either needs to be updated to state the creature goes on top of its controller’s library, or it needs to work as stated and put the creature on top of its owner’s library. My opponent controlled my creature in this scenario, but I still own it.