Ashes of Outland Cards List & Guide
Total Deck Rating
Shadow Council might provide you enough value as a finisher after Howlfiend + Treachery combo.
Initially i also thought Shadow Council role is late game hand refill. Altough now i see this card as early game all in card.
to enchance howlfiend, treachery combo, i recommend:
Bloodbloom --> to execute on turn 8 just in case turn later board will be too crowded.
Twisting Nether + Doomsayer as board preparation turn before.