[2020] Lich's Mastery is bugged, it has no option to select exile a permeanent -- hitting view battlefield doesn't allow you to select a permanent

Originally posted by Cassiopeia2020

It's definitely bugged, I've seen other people complaining too. I crafted it last week unaware of this until it happened to me and I lost a game because of it.

Sometimes it does let you exile your permanents and sometimes not, it's inconsistent. I think it's been bugged for months now, so it's probably not an easy fix.