Later that year , Arilan assists Kelson in the arcane ritual to activate the Haldane potential of Prince Nigel Haldane .
Arilan remains in Rhemuth during Kelson 's military campaign in Meara to provide additional Deryni support for Prince .
Later that year , Arilan assists Kelson in the arcane ritual to activate the Haldane potential of Prince Nigel Haldane , and he remains in Rhemuth during Kelson 's military campaign in Meara to provide additional Deryni support for Nigel .