Indeed, also codexnewb had no need to worry about Injunction on Turn 8, since it can’t hit Tech III.
Opening with Grave might have worked, I’m not sure how well I’d have handled the Taxmen if I still hadn’t drawn any teched cards, but I could’ve been better off later if I went for Plague Labs.
Anyway, those were some fun last few turns to lose to, good luck next round!