As a level 21 Captain, yes you can have all three Banners, at least I do as a Red Cappy. Have not researched this yet, but it would seem to me that the strength of the Banner would be dependent on your trait line (Red, Blue, Yellow).
Just in case you have not yet found the many links you will need...
Lotro-wiki -
Captain
Welcome back to LOTRO.
Some information and links that may be of help to you.
The game has changed much since you last played.
Below are links to several sites about some feature of LOTRO.
Lotro-Wiki - All things LOTRO
https://lotro-wiki.com/
LOTRO Basics - Basic information about LOTRO
https://www.lotrobasics.com/
LOTRO Interface - Change your LOTRO Interface and find lua apps
https://www.lotrointerface.com/
I Love Fried Orc - Now that you have trait points, how are you going to spend them to build your character(s)
https://ilovefriedorc.com/traits/
LotroHQ - Some class builds, Guides and a bit more
https://lotrohq.com/
Lotrortools - New Legendary Traceries (U30.3) by Class
https://lotrotools.pw/traceries.html
DYN Map - LOTRO Maps, lots of usefull and needed information.
https://dynmap.ruslotro.com/
DADI'S - One of the best Guide Sites about LOTRO. DADI still plays LOTRO.
https://dadislotroguides.com/
Guide: New to LOTRO guide By Thornelas - A long and detailed forum post about LOTRO. Well worth the read.
https://forums.lotro.com/forums/show...hints-and-tips
Information on the new LI System.
If you are starting new characters, the below won't be of immediate need, but you will need the information once you start to enter Moria.
New LI System introduced with Update U30.3)
Completely replaced the old LI system, thus most videos and articles about the LI system are obsolete.
NEW LI SYSTEM
LOTRO Online - Legendary Items
https://lotro-wiki.com/index.php/Legendary_Items
DADI'S LOTRO GUIDES - New Legendary System (30.3)
https://dadislotroguides.com/new-leg...ossibly-u30-3/
Just in case the site breaks the link, here it is as text to copy and paste:
Code:
https://dadislotroguides.com/new-legendary-system-possibly-u30-3/
Lotro-Wiki - Tracery
https://lotro-wiki.com/index.php/Tracery
Again, welcome back to LOTRO.