King of Time: Amplifier, Portal, Regression and Rewind

The King of Time unlocks after 999 years played across all runs. Its deck turns the calendar into a resource: Portal sends the kingdom 2 years back at max level, so you replay those years’ councils, merchants and loot, and Amplifier copies the buffs it receives to neighbouring plots. Lives lost are not given back by time travel.

Amplifier

Card text: gives every buff it gains to one adjacent plot; amplifies one extra plot per level.

• It must be adjacent to a support building to receive anything, and it passes what it receives to 1, 2 or 3 adjacent plots at levels 1, 2 and 3. A higher level reaches more plots; it does not make each buff bigger.
• Because a troop can touch at most four plots, an Amplifier lets it collect buffs from supports that are two plots away.
• Since Patch #23 Amplifier also passes on level-ups it receives.
• Power Grid (1.0) levels every current and future Amplifier up once.
• 0.9.8 highlights the affected plots while you place an Amplifier.

What it copies

Copied	Not copied
Blacksmith, Beacon, Forest, Camp, Temple	Farm, Library, Quarry, Cauldron
Swords, Shields, Migration, Over-invest	Enchantments, Procreate, the Wise perk
Level-ups (Patch #23)	Bunker and Engineering decrees (Patch #22)

This split comes from a player-tested answer in November 2025; later patches added level-ups, so test new combinations in Joker mode before building a run around them.

Worked layout

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.

Portal and time travel

• At max level a Portal sends the kingdom 2 years back. Wormhole adds a year per stack and Fracture travels 3 years back on the spot.
• You keep your plots and replay the years: events in those years (councils, merchants, blessings, Jack of Rainbows fights) happen again, and yearly effects such as Vault gold and support buildings apply again. Lives are not restored.
• If you defeat 9 enemies while time travelling, the time continuum breaks and you are sent to year 33 (Patch #27).
• Achievements: Timerelapse (travel back 3 times in a run, 16.5%) and Time Bender (reach a negative year, 4.0%).

Regression, Rewind and Temp Null

• Regression lowers a plot by 1 level but keeps all its stats and effects, so the plot can be upgraded again for more stats. Since 1.0 it cannot target a level-1 plot. Debris (1.0) gives a Temp Null for each Regression.
• Rewind is played by throwing it into the pit: your hand becomes copies of your last played cards. One-trick Pony (1.0) asks for two Rewinds in the same turn.
• Adrenaline adds attack speed every second of battle; the Brutal perk starts all troops with a stack.

The full deck, decrees and perks are on the King of Time page.