[2021] Pilgrims Forge - other means to get it?

There are currently not any plans for this @sentimil, however as you know we do occasionally release in subsequent events.
It does sound as if you have caught up with the questline, having completed the story section and moved onto the episodic ones.
We can confirm that this should not be at all unexpected, we have operated our events in this way since 2019 and we always cover this in our Announcements here on the Forum as well as via the in game News Window. This format allows every player to have a set amount of quests to complete (in this event 75) and to all finish the event within a 24 hour period.
Hopefully with just under 3 days still to go, it will mean you secure the last piece.  

We can confirm that the event quest types are mentioned in our Forum Announcement (underneath the New Leagues System), as well as in the Sorcerers' Homecoming Video (in the Announcement and also in your in game News) and of course our Wiki page all about the event (which can be located from the bottom right social icon in your game).
So we are sorry that you had not been aware of how our event questlines are staged in this way, with the 75 quests for this event.
Making the most of the Sorcerers' Knowledge that you find around your City, will give at least 30 a day, plus the additional 35 we give as a daily amount, plus the one a day quest you are on and the possibility of winning more as you open up the chests to progress (80-300). Should give a very good chance of obtaining the full set.
Please also know that as well as the fabulous help here on the Forum, if you are stuck in the game you are always most welcome to contact our wonderful Support Team, who are all players like yourself, who love Elvenar!