Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Horace Slughorn claimed that only once a student prepared a 'good enough' Draught of Living Death potion, receiving a Felix Felicis probe (before Harry did).
I guess that student was Severus Snape.
Has anyone read about how Snape used it?
Required, but never shown