Collider has revealed four of them, while The Darkness Crystal was revealed back at PAX East
Unlike most other rituals, Infernal Plunge is a sorcery, which is likely one of the reasons many people pass on it
For example, a Skullclamp and an Ashnod's Altar in a Locust God deck can give you infinite card draw, infinite mana, and infinite tokens
This ensures youre getting new cards to play with for as long as possible, and youll still be rewarded even once you finish your collection
Mana-ramping is insanely powerful, and having a creature -- with all the benefits of the creature -- also double as a way to generate resources is really good
It's only appropriate that the color of ambition would pursue victory at any cost, its creatures included