Editing LeviathanTempest:ChapterFour (section)

===== Sidebar: Increasing the power of Portents (Optional Rule) =====

For simplicity we've kept the number of Portents in every Ritual to a minimum. It does however make sense that more powerful Rituals would require a more intricate balance of signs. Storytellers who wish to focus on the religious themes have two options for expanding the power of Portents. These rules may be done on a player by player basis, after all every Leviathan's Rituals are unique. 

The first is to increase the number of ominous, but not auspicious, portents to represent the increased difficulty of more powerful Rituals. Either one negative portent per Dot or per two Dots rounded up.

The second is to allow the players to change the amount of portents in a Ritual in exchange for Experience points. Every auspicious Portent increases the cost by one and every ominous Portent decreases the cost of the Ritual by one. The Storyteller may include a minimum number of Portents. 

When changing the number of Portents the Storyteller should consider how how this changes the probability of getting only and all auspicious or ominous Portents. We recommend that the current effects occur if either side outnumbers the other by two Portents. If one side outnumbers the other by a whole four Portents consider introducing a further effect respectively: 8again and no rerolls with 1s subtracting successes.