Farming Sealing Cards

Any advice for collecting a lot of sealing cards

Daily Tasks --> Defeat X monster (epics = 5 sc, rare = 3 sc)
Marketplace --> 900 honor for 5x sc or 1800 honor for 10x sc (I never use silver)
Exploration --> about 1-3 sc per 5 stages
Boss Raids --> 25 (?) boss essence for 20x sc

Doing the above gets me 50-100 per week, but I always get epic daily tasks, always buy market, and do exploration past stage 10 (I skip boss raids and I find them boring )

Thanks!