How players use it
- Rainbow cards by job 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.
- Balance changes in 1.0 Balance works on Warlord; Smith Tower-boosted Scout Towers buff adjacent Blacksmiths; Warpers riding Raptors summon properly.
How to get it
- Loot after beating the Jack of Rainbows (twice per run).
- Merchants have a chance to stock one; the Lucky perk and Rare Goods decree raise it.
- Gacha at max level, Diffract and the Refraction decree give random Rainbow cards.
Other Jack of Rainbows tomes
Patch history
- Patch #23
Balance stats are now applied properly when used in a boss year.
- Patch #23
Balance now works properly with Converters.
- Patch #26
Balance now only works with troop cards (as it was always intended).
- Patch #26
Fixed a glitch that was giving Paladins with Balance more HP than the actual damage gained.
- 1.0
Balance card now works with Warlord.
Lines from the official Steam patch notes since Patch #18 that name this card.
Achievements
- Balance My A**: Use Balance on a Paladin.
Data: 9 Kings 1.0 card table on the official wiki, imported 2026-11-13.