Rainbow Army (Jack of Rainbows)
Game-Breaking Rainbow Cards & Cross-Faction Multipliers
The Rainbow Army is a special neutral boss army led by the Jack of Rainbows. Defeating this faction grants access to exclusive Rainbow Cards—ultra-powerful Tomes, Troops, and Buildings such as Echoform, Gigantify, X-Ray, Shrine, Slime, Golem, and the 9 new 1.0 Rainbow cards (Reflector, Reactor, Factory, Leech, Great Hall, Singularity, Accumulator, Mantra, Hound).
Rainbow cards can also appear in Jack of All Trades (Merchant) shops with the Lucky perk.
Led by the Jack of Rainbows; invades your kingdom once per run from Year 11 onwards.
Strengths
- Echoform clones an entire plot—including all accumulated stats and enchantments—to an empty neighbor
- Patronage & X-Ray break normal level caps and accelerate Lab Rat / Concabulator chains
- Shrine, Temple, and Gacha provide massive passive scaling across every King archetype
Weaknesses
- Not selectable as a starting King (though custom decks can be built in 1.0 Joker Mode)
- Rainbow cards are rare and depend on defeating Jack of Rainbows or rolling Merchant shops
Best Diplomacy Allies
- king-of-nothing
- king-of-time
- king-of-greed
Deck Composition: [object Object]
Rainbow Army (Jack of Rainbows) Card Pool (25)
All cards native to Rainbow Army (Jack of Rainbows), including Troops, Towers, Buildings, Enchantments, and Tomes.
Destroys the target plot permanently and immediately triggers a Royal Council Decree event.
Spends 9 Gold every year to level up 1 random plot. Gold cost drops by 3 per Shrine level.
Sacrifices all troops adjacent to the target plot; target troop gains the sacrificed unit count.
Increases a random stat of a random active plot by 10% every year.
Increases the target plot’s movement speed by 200% (works on Mothership and Bombers).
Duplicates the target plot—preserving ALL accumulated stats, speed, and enchantments—into an empty adjacent plot.
Doubles the physical size, damage, and maximum HP of the target troop.
Levels up your Base plot by +3 levels, bypassing the normal maximum level cap (Patch #23) and triggering Lab Rat chains.
Levels up all plots diagonal to the target plot, bypassing standard max level caps (Patch #29).
Passive backline unit. Generates 3 Gold per level whenever killed in battle (or destroyed via plot sacrifice).
Units / Rank: Lvl 1: 9 | Lvl 2: 18 | Lvl 3: 27
Lonely powerhouse. Every year, increases all stats by +10% for each empty (or locked, Patch #29) adjacent plot.
Units / Rank: Lvl 1: 3 | Lvl 2: 6 | Lvl 3: 9
Proliferating troop that multiplies itself into an empty adjacent plot every year, inheriting stats.
Units / Rank: Lvl 1: 3 | Lvl 2: 6 | Lvl 3: 9
Patch #18 Rainbow Building: When leveled to Level 3, triggers a Rainbow loot reward event (turns into Broken Gacha).
Patch #18 Rainbow Troop: Massive frontline tanker. Any Tome card cast on Golem has double effect.
Patch #18 / #29 Rainbow Tome: All plots sharing the target plot’s card gain +30% to all stats.
Rainbow Tower buffed in Patch #29; scales massive single-target or pulse damage for late-game clears.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new game-breaking Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026); also added to the starting hand of Universe 25 Quest.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.
Introduced in 1.0 Release (Nov 12, 2026) as part of the 9 new Rainbow cards.
New in 1.0 (Nov 12, 2026) — exact numerical tooltip values pending community compendium transcription.