If the warlock acquires the totem staff, and his craft is 6 or greater, is his full complement of spells 3, or 4?
At what point would his "full complement" of spells become four (if ever)?
Or does he simply go up to 3 spells each turn at the turn's beginning, and IF he gains another spell somehow, he can hold it? (since that would be "one more than his craft allows")