Rainbow and Chaos cards: Jack of Rainbows and Jack of Chaos

Rainbow cards belong to no king. You get them by beating the Jack of Rainbows (it attacks twice in a standard run), from merchants, from the Gacha building and from tomes such as Diffract. Chaos cards come from the Jack of Chaos, who joins your enemies in Endless mode from year 34. 1.0 has 36 Rainbow cards and 15 Chaos tomes.

Ways to get Rainbow cards

Source	Detail
Jack of Rainbows battle	Twice per run since Patch #18; a win offers Rainbow cards as loot. Benevolent (Nothing perk) adds a Wildcard after each of these battles
Merchants	Each shop has a chance to stock one; Lucky raises it by 20% per rank and Rare Goods guarantees one per shop
Gacha	At max level triggers a Rainbow loot event
Diffract	Destroys a plot for 2 random Rainbow cards; a Golem target gives twice as many (Patch #29)
Refraction decree	Replaces your hand with random Rainbow cards
Relics decree	Turns treasure chests into Rainbow chests
Reactor (1.0)	Summons random Rainbow units in battle rather than giving cards

The Compendium (press C) records Rainbow and Chaos cards only after you have used them once.

Rainbow cards by job

• Levels: Patronage (+3 base levels beyond the cap), X-Ray (levels every plot diagonal to the target, beyond max level), Shrine (spends gold for a random level-up each year), Mantra (1.0, bearer gains +3% all stats per stack whenever any plot levels up).
• Copies and merges: Echoform duplicates a plot with all its stats onto an adjacent empty plot; Extraction destroys a plot for 5 copies of its card; Codex returns copies of a tome used on it; Singularity (1.0) merges every identical card into one, summing stats beyond any cap; Unify merges the adjacent troops’ units into the target.
• Support multipliers: Warehouse repeats adjacent building effects; Surge triggers a support building 9 times at once (27 stacks from a level-3 Blacksmith, 36 with Overwork); Reflector (1.0) receives every tome effect applied to an adjacent plot.
• Troops with a rule: Ogre grows for each empty or locked neighbour; Slime copies itself to an empty adjacent plot every year; Dwarf walks to a new plot each year and gains +50% all stats when it unlocks one; Golem doubles tome effects used on it; Leech (1.0) drains adjacent plots every year.
• Single-target boosts: Gigantify doubles size, damage and HP; Balance sets HP and damage to the higher of the two; Accumulator (1.0) grows by 9% for each year you hold it; Precision +100% first-hit damage per stack.

The card list shows all 36 with full text.

Jack of Chaos and Chaos cards

From year 34 in Endless mode the Jack of Chaos is among your enemies. Its deck holds 15 Chaos tomes, stronger variants of king tomes:

Chaos card	Compared with the king version
Chaos Wildcard	Levels a plot beyond max level, no cap
Chaos Overhaul	Levels 3 random plots beyond max level
Chaos Earthworks	Destroys all adjacent plots; target gains the sum of their levels beyond any cap
Chaos Clone	3 copies of the target plot
Chaos Mortgage	9 gold times the current year
Chaos Swords / Chaos Shields	+333 raw damage / +999 raw HP
Chaos Offering	3 Chaos cards

Chaos decrees also enter the Royal Council after year 33; Darkness destroys all your Rainbow cards for a damage boost per card, and Black Market opens a Chaos shop. Beating the Jack of Chaos earns Chaotic Good; using 9 Chaos cards earns You’re So Crazy (both 1.0).

Rainbow achievements

Gambling Problem (activate 9 Gachas in one run), Smells Like Meta (a tome on a Golem), Big Guy (Gigantify one troop 3 times), The Great Unifier (Unify 999+ troops), Infestation (9+ Slime plots), Barren Land (Raze 3 plots), Shrekmate (win a battle with only Ogres), All-in (Randomfy your base) and Death Cheater (an Obelisk at 9999+ damage) all arrived in 1.0. Objectives for all 99 are on the achievements page.