Ritual Step
The Ritual Step is the interactive step of the Turn, happening right after the Draw Step.
All effects that affect either other players or the global state of the game (such as Fumes) will be activated during this step; namely:
During the Ritual Step, players will act in turn order, essentially having a sub-turn; in each player's sub-turn, they can, as many times as they wish, activate a Hex effect by discarding an Ingredient Card from their hand that has a Hex effect.
Before resolving each effect, players get the opportunity to respond or pass priority, again in turn order, starting with the first player after the sub-turn player.
Typically, this process is vastly simplified because not all players will have or wish to use these types of effects every Turn. A simplified version would be each player declaring "no Ritual effects" in turn order, until say one player activates a Hex, and then players can declare responses simultaneously.
After all players had their sub-turn, the Play Step begins.