Books in the Elf Empire series

Leo barely defeated the invading orc armies and protected his nascent elf empire... Now, a new threat appears. The Red Plague. This infection spreads through wounds from the creatures infected by it, and drives those infected to serve a mysterious entity, the Blood Court. And the plague is coming from Stonehaven, an ancestral seat of the dwarves who were once allied with the Leo's elf empire. Desperate to solve this problem, Leo must seek out magical allies to break the barrier keeping people out of Stonehaven, and then enter the dwarven city-all the while trying to find a cure for the red plague itself and destroying the Blood Court.>[Contains a wacky bro dragon, a five-year-old stronger than the dragon, more quips than anyone wanted to see, and a complicated magical system with near endless possible variety. Also, kingdom building, heartfelt dragon moments, and charts. Ots of charts.]