Is your issue a bug, or is it a crash?
Please describe in as much detail as possible how to reproduce the bug or crash.
The ability reads “After attacking, replace this ability with target’s main ability and afflict it with Stun for 2 turns.”
When a creature with Possession on either Artifact or Demonic ability slot attacks, Possession will replace the attacker’s main ability, not Possession.
The attacker can still repeat this process and stun the target for 2 turns every attack. I’m not sure this is intended.
What operating system are you playing the game on? Windows, Mac OS, Android, or iOS?
What game version are you playing? You can find the version number on the title screen in the lower left corner.
Let me know if you need more details. I know it’s a bit confusing
Edit : Also the same thing happens when Possession is obtained from Death Shapeshifter ability Artifact.