Beacon

Every year, adds attack speed and movement speed to all adjacent plots (+2% per level on the official wiki table).

How players use it

King of Nothing Then put a Paladin in front, because damage buffs also raise its HP. Give it Steel Coat stacks and put a Blacksmith between Castle and Paladin to buff both. Gunpowder and the Mauler perk widen the boulder area. A Greed Beacon beside the Castle adds attack speed.
Amplifier Centre: Amplifier. Left of it: a level-3 Blacksmith. The Blacksmith’s yearly damage buff lands on the Amplifier, which passes it to three of its other neighbours at level 3. A troop placed on one of those plots receives the Blacksmith buff without touching the Blacksmith, leaving its other three sides free for a Beacon, a Forest or a second Amplifier.
Quests changed late in Early Access and in 1.0 Imperium, Farmlands, Shopping Spree, Beacon Valley, Nature Revolt: slower enemy growth (Patch #31).

In the King of Greed's 9-card deck: a run as this king can start with it, and losing a battle offers cards from your own deck.
Loot after beating the King of Greed in battle when that king is one of your enemies.
Merchant: Jack of Structures (buildings, towers and bases).
Joker mode: pick it for a custom deck.

Patch #20 2025-12-05
Necropolis, Beacon Valley, Infertility & Farmland: fixed random battles with kings that are not your enemies.
Patch #29 2026-07-29
Beacon: it now also increases movement speed.
Patch #31 2026-10-07
Beacon valley: mildly slowed down enemy progression.

Lines from the official Steam patch notes since Patch #18 that name this card.

Full-service: Have a Blacksmith, a Library, a Beacon, and a Forest buffing the same troop plot.

Data: 9 Kings 1.0 card table on the official wiki, imported 2026-11-13.