A cheap little gauntlet grinder I built, went back to back to back 7 wins yesterday.
Fallen Oni +
Memory Dredger keeps the AI from drawing new creatures (they can't resist blocking and killing the
Fallen Oni) as long as their first round of flying blockers have been cleared away via removals like
Annihilate or
Combust. The majority of cards are < 2 cost with low influence requirements so even if you get into a mana short situation you still have options to win quick using weapons generated with
Obsidian Golem.
Umbren Reaper helps keep the deck alive in mid to late game situations. Don't be shy about discarding creatures in favor of the right influence mana when using
Quarry, the deck needs 3 shadow for midgame and you can always pull a creature back from the grave using
Dark Return or Memory Dreger.
Good luck!