Friends are characters from other fairy tales who will aid you with special powers. Each time you build a Walls section, draw the top Friend card from the Friend deck. Reveal it and decide whether you want to keep it yourself or give it to another player. (The other player may not refuse it). See Friends Cards for details.
Each player may only have one Friend at a time. When you get a Friend (either because you chose to keep one or because another player gave one to you), you must discard your previous Friend (if you had one) and keep the new one instead.
Special Actions: Some Friends grant Special Actions. Each Friend's Special Action can only be used once per turn during the Build Phase. It is sometimes possible and legal to use one Friend's Special Action, acquire a new Friend, and then use the new Friend's Special Action on the same turn.