Legend reflects the divine favour of your divine sire, and the glory of your epic deeds. Legend restricts Epic Attributes, Knacks and Boons but also aids in fantastic stunts worthy of your name.
Ichor is the divine power flowing through your veins. It is the essence of the ancient God who you descend from, and is used to power certain abilities.
Until the relevant pages are updated, Gnosis starts at 1, Legend Starts at 2. Legend can not exceed 4 until Gnosis exceeds 5. All powers granted from Purview have Gnosis added as an additional factor to dice pool, like a Mage. Mage rotes can be learned, at story tellers discretion, but follow the rules for Purviews – for example, “Control Heat” would be Fire 1, while “Control Fire” might be Fire 2.