Mantra

Every time any plot levels up, the bearer gains +3% to all stats per stack.

How players use it

Level cards from other pools Mantra (Rainbow, 1.0): the bearer gains +3% all stats per stack whenever any plot levels up, so it profits from every link in a chain.
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).
Quests changed late in Early Access and in 1.0 Universe 25: you start with one Mantra (1.0).
Balance changes in 1.0 Quest changes: Universe 25 starts with a Mantra; Nature Total War has lower enemy scaling.

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.

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

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