A quest for level 50+ wherein you have to gather together a party of seven other players, all low-level, to do a low-level quest that requires a full group (eg It Kills With Fire). You (and any other characters over a given level, eg 25) are not allowed to draw your weapon or it fails. On completion, you get some kind of token; a hundred of these lands you the next progression stage through your relic upgrade.

This is so that high level players are encouraged to help folk coming late to the game and keep older content reasonably active.

There can be a version of this quest for every quest that requires a full group.