Laboratory (Stronghold)

A laboratory contains magical and alchemical equipment suited to research and experimentation as well as various containers—crates, barrels, bottles—holding materials and reagents used in the experiments.

Stronghold Feat: You immediately learn one new cantrip or spell at the highest spell level which you have access to, chosen from one of your class spell lists. In addition, once between long rests you can use a bonus action to regain a spell slot of a spell level equal to half your proficiency bonus.

At Grade 4, while using your laboratory the time required to relearn a class feature from the sorcerer , warlock , or wizard class is reduced by half.

At Grade 5, while using your laboratory the time required to retrain an archetype from the sorcerer, warlock, or wizard class is reduced to 1 month.

Best Suited For: Sorcerer, warlock, wizard

Minimum Size: 1,001 square feet (Grade 2)

Minimum Quality: Luxurious

Followers Available: Apothecary, diviner, interpreter, porter, sage, torchbearer

Source
Adventurer's Guide

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