Trismegistus: FamiliarsExpansion

From BoardGameGeek:

Even during the 19th century alchemists couldn't secure their labs from the mischievous pets. Animals require a lot of attention, and it is well-known that when bribed with some shiny objects, they would calm down. However, familiars are not just charming common pets - when tamed, they can aid you in your work, lending their unique abilities! This expansion introduces to the game Familiars - tiles gained at the end of the first and second round. Familiars will influence the Transmutations in the section they occupy. At first they show their mischievous side bringing a disadvantage for a player. However, if players decide to spend a few resources the Familiars require, they will gain powerful positive effects. -description from the publisher