Where are you at on
Glint-Horn Buccaneer? I'm looking into switching my triangle UBG Graveyard to UBR Discard and it looks like a key card to have in red.
Also curious about
Tomebound Lich.
Glint-Horn Buccaneer is still fine. I'm not as hot on it as I once was, but only because it turned out to be a little less good in generic aggro decks as I thought it would be.
Tomebound Lich is way less interesting than other options for U/B, especially if you want to support discard matters.
Psychatog is a much better option.