For those asking, for Constructed formats that don't have sideboards (like Commander), you won't be able to reveal a Lesson card from outside the game but you can still discard and draw The Best Blue Cards In LOTR: Tales Of Middle earth MTG The Top 50 Blue Cards MAGIC: THE GATHERING For the non rotating format players, Are there any lessons from Avatar you'll be running with your learn cards? : r magicTCG Follow up to a previous question, do cards played from a sideboard need to match your commander's colors? : r mtg