You are adept at casting while riding.
Benefit: You can have a mount move both before and after you cast a spell, and cast a spell while your mount takes a run action, without needing to make a concentration check. You gain a +2 bonus to any concentration check you are forced to make while mounted.
Adventurer’s Handbook: Genius Guide Volume 1. Copyright 2010, Super Genius Games. Authors: Owen K.C. Stephens and Stan!