Despite Mirlonde's weak stats and mediocre ability, i was still looking forward to using her as i love trying new things. In designing a deck i wanted to take advantage of two of Mirlonde's characteristics, her low starting threat and silvan trait. Below I've created a solid deck that has beat the Steward's Fear, the Druadan Forest, and Massing at Osgilith during trial testing. (note: i only use 1 core set)

Heroes: (starting threat of 19)

Mirlonde - Glorfindel (spirit) - Denethor

Allies:

Henamarth Riversong x1

Arwen Undomiel x2

Imaldris Stargazer x2

Silvan Refugee x3

Silvan Tracker x3

Mirkwood Runner x3

Haldir of Lorien x2

Attachments:

Unexpected Courage x3

Light of Valinor x3

Resourceful x3

Ranger Spikes x3

Asfaloth x2

A Burning Brand x2

Events:

Strider's Path x3

The Galadhrim's Greeting x2

Daeron's Runes x3

Secret Paths x2

Risk Some Light x3

A Test of WIll x2

Radagast's Cunning x2

The goal is simply to keep the threat low and manipulate the encounter deck to the point where you can use will power to get thru the encounter deck with relative ease. With a starting threat of 19 my goal is to get a light of valinor AND Resourceful in my opening hand although a lot of the time this doesnt happen and its best to just settle for one or the other. Besides Resourceful the only other secrecy card is Risk Some Light where even if it cant be used when the threat is below 20, is still a really good card worth the 3 resources. With Elrond's Counsel and Galadrim's Greeting I can usually still keep my threat below that 20 threshold especially if an Elrond's Counsel is in my opening hand or pops up in the first two turns. You'll notice all the silvan allies are here to take advantage of the silvan tracker's ability which helps absorb archery damage or undefended attacks. Denethor while not thaaat thematic is an able bodied defender if i feel the need to engage anyone but mostly will be using his ability, he is also the hero that would claim unexpected courage.

The deck's biggest weakness are card draw and attack power. The deck would probably benefit from master of the forge and to be honest, the only reason hes not in this list is because i need him more in a different deck i have and i loathe using proxys.

Lemme know what you guys think or if there are any other Mirlonde decks you've been using that have been effective

I am actually growing fond of Mirlonde… At first, I wasn't too impressed, but I'm slowly beginning to appreciate her ability. I haven't really got any useful feedback, other than I really like the deck idea. I feel like maybe this should work with another deck to cover this deck's weaknesses.

Not sure how i made this mistake but unexpected courage should only be x1 (only have 1 core set) and there should be Elrond's Counsel x3. Even mentioned Elrond's counsel in the write up but forgot it in the deck list smh

I played with a deck that is almost similar to yours. Like I already posted somewhere else, it was able to beat Dol Guldur. So yeah, this deck is excellent!

Mono-Lore with Mirlonde is also pretty awesome. If you pair it with an archery deck running Legolas, you can get some real use out of Silvan Tracker

I use her with Glorfindel and Elrond and it rocks. Granted, Glorfindel and Elrond do much of the work but she allows them to start at lower threat and take everything out. I even won Dol Guldur with her as prisoner and can most of the quests.

I also use Mirlonde with Lore Glorfindel and Elrond along with a lot of silvan characters--it's a nice combination since Elrond can summon allies from any sphere (including eagles). When combined with Gildor Inglorion or Imladris Stargazer, Elrond + Vilya is super-powerful.