Thanks to your heritage, you can thwart magical attacks almost instinctively.
Benefit(s): When you and an ally who also has this feat both ready an action to counterspell, you can counter a spell if you both expend any spell of the same level and school as the spell you wish to counter. If you both attempt to counterspell with dispel magic, you each gain a +2 bonus on your caster level checks. If you have more than one ally readying an action to counterspell, you can select only one of those allies for the purpose of this feat, and that ally must also select you.
Pathfinder Campaign Setting: Inner Sea Races © 2015, Paizo Inc.; Authors: Ross Byers, John Compton, Adam Daigle, Crystal Frasier, Matthew Goodall, Alex Greenshields, James Jacobs, Amanda Hamon Kunz, Ron Lundeen, Rob McCreary, Jessica Price, David N. Ross, Owen K.C. Stephens, James L. Sutter, Russ Taylor, and Jerome Virnich.