1. to come是后置定语，表示“即将到来的”。你的分析正确。
2. in the form of意思是“以……形式”。
例如：
She is taking lots of exercise in the form of walks or swimming.
她在以散步或游泳的方式积极锻炼身体。
有时翻译时可以作一点变通，in the form of不用翻译出来，例如：
Help arrived in the form of six heavily armed police officers.
6位全副武装的警官前来帮忙。
encounter reality in the form of blizzards, lightning, thirst, starvation and snakes可以翻译为遭遇暴雪、闪电、干渴、饥饿、蛇虫种种残酷的现实。
