Recruit is a new mechanic in The Hobbit, and it works a lot like connive. Whenever you recruit, you draw a card, then discard a card. If you discarded a nonland card, you create a 1/1 Human Soldier creature token.
Library of Leng stops the Soldier
Library of Leng has a weird interaction with Recruit. If I use it to put the discarded card on top of my library, the game cannot verify whether I discarded a nonland card. I will not recruit a Soldier, even if that card was nonland.