The first review it's not correct: Rules: Then If the effect text of an ability includes the word “then,” the text preceding the word “then” must be successfully resolved (or be true) in full before the remainder of the effect described after the word “then” can be resolved.

You don't need to ready Medor if it's already ready; then activate in this case because it's TRUE that is ready.

2
Unfortunately the first review is correct, what must be resolved is the effect "ready Mendor", that is to say Mendor going from an exhausted status to a ready status (you cannot ready an already ready character, sorry for the tongue twister). I can see the confusion due to the same word used as an adjective and a verb. —

This card is completely useless within the "repackaged only" content!! They should have almost replaced it by another card from another set in the repackaged Dream Chaser. A bit of a disappointment.

This card seems to have been made specifically for the Weather Hills quest.

In normal times, the effect isn't that useful. But in the weather hills quest, because of the 1B forced effect: "After the active location is explored, reveal the top card of the Orc deck and resolve it as if it was just revealed from the encounter deck", it makes removing locations from the staging area have double use, first you get rid of a location, but it also prevent drawing from the orc deck for every single explored location (since the quest effect only applies to the active location). Keep in mind you can exhaust a ranger ally, and it doesn't need to be a hero.

Just look at the card: "Concealed Orc-camp", not only you need to add an orc to travel to the location, but the quest also make you reveal an orc when you explore it as active location. Since that location only has 2 quest points, and all enemies have at least 2 threat, Playing Expert Tracker means you will skip 2 orcs from entering play. This is huge, especially in true solo.

The biggest downside to this card is that it's a 1 time use, so you can't really rely on that card alone to get rid of all the locations in the staging area. Probably also need a card to get it back from the discard. Or other location control cards such as Riddermark's Finest or Northern Tracker.

Idraen is an awesome target for this card as well :). —
True, unfortunate that she's not in the repackaged content. —

Most comments already told how good this card is. I just discovered that it's a favourite of mine comined with [Greenwood Defender]. Let him chunk 1-2 Attacks, revive him, let him do it again. Awesome for keeping attackers up.

Note that, due to the difficulty to properly combine Messenger of the King with the intent of this new contract, we at ALeP we have proposed a new wording for Messenger of the King inside our Free to Choose List, that you can find at this page alongextendedparty.com

The new wording of Messenger of the King basically turns the MotK hero into a starting hero in all respects, so if you want to use MotK with say At the End of All Things, the MotK will be one of your two starting heroes with all that entails (like not being able to gain resources from attachments). The same would be true for something like The Grey Wanderer or Bond of Friendship, with the MotK hero taking the place of a starting hero.