The topic was brought up in another thread about what is the most popular ally per sphere to Sword-thain, so I decided to look through the available options and see what I considered the best:
Of the available unique allies, here are the top of the list for me for each sphere based on stats/abilities/traits
Leadership: Anborn, Ceorl, Eldahir, Faramir, Gimli and Eothain
Lore: Anborn, Gleowine, Gildor Inglorion and Haldir of Lorien
Spirit: Arwen, Emery, Gamling, Glorfindel and Sam
Tactics: Azain Silverbeard, Boromir, Deorwine, and Legolas
In each case, the only thing that really shines is the capacity to put Unexpected Courage on them to trigger their ability multiple times - or to get use out of their stats after using their ability - or to be able to put certain weapons/armor on them that are restricted to heroes.
LEADERSHIP (Faramir/Ceorl): Faramir is likely my favorite choice for the UC+super willpower combo. Ceorl in an interesting choice since he can be passed around the table. See HERE for support deck around this idea. Anborn has an awesome combo potential with Wingfoot. Eothain and Gimli both offer built in readying effects and Eldahir has a really good ability (for multiplayer). Eldahir is likely the weakest choice.
LORE (Gleowine/Gildor): Gleowine and Gildor Inglorion are excellent choices, again provided you give them an Unexpected Courage to make the most out of the card advantages they offer. Haldir has excellent keywords/traits but is only relevant in multiplayer. Anborn has good stats and could get back multiple traps. I think it is a tie between Gleowine and Gildor since they offer card advantage.
SPIRIT (Glorfindel/Emery): Arwen is a good choice - again due to UC - so you can give out multiple +1 shields. Gamling, with UC, could help keep your hand full of Rohan allies. Both are poor choices without UC. Sam has a built in readying effect and with Sword-thain resource he can fuel himself. But due to the amazing stat line, traits and built-in readying effect, Glorfindel is the best choice in general, but Emery is the best choice in a Caldara deck.
TACTICS (Legolas): Legolas is hands down the best option to give Tactics more access to card draw. Getting a Horse on him to get multiple uses is vital and it is an in-sphere solution to needing readying effects. Azain and Deorwine both have great keywords/abilities/traits to make use of. Could use a Warhorse on Azain or an Armored Destrier to get more uses out of them. Bofur and Rumil almost made the list, but Legolas is better than both of them in every way.
From Neutral , yes, there is an neutral option and it's Gandalf. Because you can put Narya on him, giving him the printed Leadership sphere, so you can still Sword-thain him. This is a ridiculous amount of work, but would be fantastic to see done sometime. He doesn't exhaust to commit to the quest and can have all of Gandalf's other toys. Just don't forget to threat up by an additional 2 each round to keep him around.
What do you guys think? Did I leave anyone out that you'd put up there as a prime option for Sword-thain? Do you agree with my top choices for each sphere?
Edited by Slothgodfather