Targeted discard effects, such as Duress, Thoughtseize and Cabal Therapy, have been deemed "playable" in some way, shape, or form. Cards such as Liliana of the Veil, and Hymn to Tourach whilst played in other formats, have not seem much play in recent times in vintage. Historically, both of these cards were deemed "bad" due to the prevalence of dredge. Whilst the ability of a dredge deck and pilot to perform well at an event has not changed, with the variety of dredge hate available, it feels like the percentage of dredge decks in a tournament is lower now than in the past. The downward trend of mana drain decks may also be relevant.
I am curious to people's thoughts on cards such as LotV and HtT in the format today. Similarly, are there other cards that have not been able to perform well in the past, but due to the evolution of the format are prime candidates for testing today?