Carpentry Mastery
Carpentry Mastery supports Rat’s upgrade-heavy development. The guide says it reduces the Stone needed for upgrades in 801 and reduces upkeep costs in 802 and later.
How it works
The guide connects the lore to upgrading many buildings: each upgrade gives its standard bonus and increases population cap, while Carpentry Mastery makes those upgrades less costly in Stone and later reduces upkeep. It therefore rewards a plan that gathers Stone and invests widely in building upgrades. The evidence does not specify the reduction amounts.
When it helps
Prioritize it when pursuing the guide’s broad upgrade plan.
Your next step
The guide usually takes Jörd’s Blessing after unlocking it.
Read the supporting references
Rat clan lore progression and related unit development, limited to the build choices and effects shown in the supplied Rat guide evidence. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.