The Emperor Charles Tavern Lodgings
Description
In Kingdom Come: Deliverance II you can visit lodgings to trade for new items, play dice, and buy room and board. You can also get tips from the innkeeper about nearby quests, or other interesting gossip. Among their inventory you’ll mostly find food items, but they often have other useful items too, such as potions, dice, and badges. The price of goods and the items they have in stock, including unique items, can vary from trader to trader, so it’s worth visiting each one you find.
When I entered the tavern for the first time it unlocked a skill called King Charles V. What does this skill do? It's not listed anywhere in the Player menu.