There are many debuffs, I think you ignored when you tested it:
1. Like other actions like "Raze", "Resolve the decree", or "Adjust the Outcast", you always take "Chastise" and lose a point because of it per turn.
2. Generating monopoly items becomes slower if you score too many points early in the game, as you won't have any cards to craft, which is vital.
3. More Knarr does not mean you have more times to reroll.
As for the horns, you can try "Remove any 3 of your warriors and/or tokens to draw 2 cards" - an original that was tested for a long time before being replaced for being too weak.