Consilium

A Consilium is a gathering of the most powerful Fae Elders in the world. According to Dyson, Consilium is rarely called. Prior to this assembly, there had not been such a gathering in over 1,200 years.

To summon the Light Fae Elders, white flowers has to be burned in a censer; and to summon the Dark Fae Elders a flock of ravens, known as a "Black Cloud", must be released.

History
To defeat Hades, Mark called for a Consilium and summoned the Light and Dark Fae Elders.