You have trained in order to cast Thaumaturgy for the express purpose of battle. Select a single path of Thaumaturgy when you purchase this merit. You gain a +4 wild card bonus to all of your attack test pools when using powers from this path during a combat scenario. This bonus only applies to the challenges involving direct uses of the chosen path. It does not apply to indirect uses, such as attempting a challenge to establish a grapple in order to use Cauldron of Blood.