Hey there. The only seals that can still be earned that count for 'Seal the Deal' are Unbroken, Dredgen, Cursebreaker and Rivensbane. No other current seal counts. Dredgen and Rivensbane can be completed right now, this season. Unbroken, if no progress has been made on A Glorious Legend, must be started this season as the seal will be retired when Season 18 ends. Cursebreaker requires Horror's Least, a weapon that will require The Corrupted to come back into the Nightfall rotation.