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 [[00-Balance Of Powers/3-Mechanics/6-Ability Scores/Proficiency Bonus|Proficiency Bonus]]. - At [[Stronghold Size#Stronghold Size Table|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 [[Stronghold Size#Stronghold Size Table|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 ([[Stronghold Size#Stronghold Size Table|Grade 2]]) **Minimum Quality:** [[Stronghold Furnishings and Staff#Stronghold Furnishings and Staff Table|Luxurious]] **Followers Available:** [[Apothecary]], [[00-Balance Of Powers/3-Mechanics/4-Equipment/Followers/Diviner|Diviner]], [[Interpreter]], [[Porter]], [[Sage]], [[Torchbearer]]