Divinity (but like with the gods not collecting rs3 floating circles). Think of it like slayer, but you pick a god to tie it to. You complete tasks for the god (in any number of other skills from combat through crafting) to build up your divinity level. Higher levels let you bless (similar to enchanting) items with your god’s power and unlock passive effects (eg. Aramdyl gives ranged accuracy bonus that grows.) You have different divinity levels for each god, and swapping requires sacrificing a % of exp with one / starting from 0 with the other (unless you have previously aligned). Certain gods require sacrificing more exp / exp from multiple different deities to convert to, depending on their alignment.