Q: Can I use A Good Harvest (AtS 10) to play a 0 cost card without a resource match?

A: No. A Good Harvest only allows you to spend resources for the named sphere, a resource match is still needed to play cards with no resource cost.

Now that we have that important bit out of the way, let me just say that A Good Harvest is amazing! It allows you to do 2 things: 1) play off sphere cards (e.g. put Steward of Gondor on a hero using any resources in play) and 2) smooth resources in multi-sphere decks (e.g. spend excess resources to pay for your hand full of cards)

Tri-sphere decks everywhere got a lot more interesting when this card was released.

A Good Harvest is not just good, it's great!

Beravor is the best hero in the core set (yes, even above Éowyn) and I would argue that she is hugely underrated in the game at large. At 10 she doesn't hurt you too bad, and her 2/2/2/4 statline is nice and versatile. But who even cares about those stats? What she does is give you an amazing 3 cards per round. Cards in hand is more important than resources imo, so this makes her more valuable than the great Steward of Gondor by that logic. Additionally, she has 2 keywords (Dunedain and Ranger) that help with certain other cards in the card pool. She's great with Ranger of Cardolan as she is likely to draw him into your hand before and after you use him. Shines in dual or tri-sphere decks where you are depending on songs or A Good Harvest to add an off sphere.

Beravor is a and card draw staple.

Thrór's Key gets my vote for favorite location attachment. If this card is 1) not already in play (unique) and 2) is attached to one of your heroes, you can attach this to any non-immune location that is added to the staging area (not just revealed). Think of all the evil things you can cancel - travel effects, passive effects, variable values - the list is extensive. Dwarven Tomb and other cards can recycle Thrór's Key after it's discarded. In a quest with nasty locations with nasty effects, why wouldn't you include this key attachment? P.S. This card can only be attached after the location is revealed so surge and when revealed are not canceled.

This is the best trap card in the game. Easily worth consideration even outside a trap deck. Think of this as a perpetual Feint. As long as the trapped enemy doesn't have a high count or Archery, you can just leave it hanging out in the staging area and not think twice about it. Doesn't matter how the enemy is added to the staging area. It works on any non-immune enemy that enters the staging area. Thalin or other direct damage effects like Expecting Mischief that kill the revealed enemy do not trigger Ranger Spikes. If you can destroy the attached enemy, you can grab it back into your hand with Erebor Hammersmith. Like the idea of a free round in solo? Like the idea of playing 12 of these in 4-player and removing enemies from the equation altogether? Ranger Spikes is a 10 out of 10.

In the right quest and with the right heroes, this card can be a game-winner. Goes well with Thalin's ability, and even better with Denethor or any other scrying ability so that you know when to play it. It's also not too bad to play blind if a revealed enemy would undo your game. A no-brainer against quests with low enemies, but not bad for softening tougher enemies that aren't immune to player card effects. Keep in the mind the effect only works on enemies that are REVEALED from the encounter deck. Also doesn't work against quests that add enemies to the staging area from other decks not titled "encounter deck." (e.g. Underworld Deck from The Steward's Fear)