I'd like to see a Cursed Harness that functions similar to Bad Luck (or the opposite of Enchanted Harness) to give -1 or -2 to all dice rolls as long as it is in hand. The idea is that players using it would sacrifice a point or two on all dice rolls to get lower dice rolls against Horned Plates, Frenzy Aura, etc. I've seen players trying to use bad luck on their own team to achieve this effect and it seems like it'd be a cool addition to gameplay.
I use Bad Luck on my wizards with Arcane Aura, and I think this would definitely be an interesting niche card, or as a regular drawback akin to Ill-fitting Armor on other equipment.