From publisher blurb:
When you and your buddies are facing down a grandiloquent caster and his spells, there’s nobody you’d like to have at your side more than a conduit. Able to draw spells into their body and blast ‘em right back out, these guys have plenty of potential.
Conduits possess a rare exceptional gift that is only shared by a few disparate creatures, the ability to absorb magic. They are also able to pull this magic from the world around them. With this power, they are able to wield manifested magic, blast an enemy, or even channel it into martial prowess.
He does require magic to function properly and, in low-fantasy settings, a conduit might find oneself at a minor disadvantage compared to its counterparts.