Okay, got past Abyssal without Prestige in <10? hrs of playtime, I think, and while Ebony looks daunting, its effect seems very powerful since I only have 11 cards.
And Ebony has increased turn limit... With good luck, I bet I could get past Ebony.
Such a bad hand: Just Mirror. Spirits and Elk. Gonna grind for more Tokens just to improve what happens when I'm that unlucky.