Herigast is a dragon, so one route to explore is to fill your deck with expensive dragons
He points out several key places of the city, all of which he has secret access to
Unfortunately, far too many of those articles suggest using desiccant to "keep the cards dry and prevent curling." It's a noble attempt to solve the curling issue, but it brings an underlying assumption that the default state of the cardboard side of foiled cards is "dry." In reality, it seems the average moisture level of the cardboard is around 6065% when printed
Strengths may vary, but they help each other, in order to bring big creatures to help or create multiple of them to crush your foes without mercy
That said, I personally like Nahiri, Forged in Fury for her ability to circumvent commander tax and potentially play a lot of free cards