the vial opens and wooof the cat…
In this example, the cat showed decoherence from his form and strong entanglement with a dog. Not sure we can blame poison vial for that. Maybe it was due to staring in a rapidly changing colors of a LED Potion Desk Lamp which gave him seizures.
Arf.... why haven't I thought about that... I however thought about the 'superpotion' principle ;)