Draft Pelin and Crow. Depending on what your first card is, just keep picking cards of that same color. Even when just advantaged by one or two strong cards, you can stop purchasing from the tavern at that point and then prey on the opponent revealing a power card from the tavern. It's really that simple. Basically no thinking necessary. Orgnum is far more complex than literally just buying red or purple cards. You'll be fighting above your weight class with zero issue.
Rest in Peace:
The Dragonknight
2014-2025
This commemoration is for the class that has constantly been plundered and dismantled by designers for no obvious reason while other classes continue to have coherent skill lines and feel both powerful and cool.