Probably not going to work - needs to be more focused. Panetti’s is a spam skill that you need to build around to get support out of. Focus on a damage type and blast away.
Alternatively you could focus on Vire’s Might and use the Vanquisher’s set to zip around like a maniac.
Or you could focus on EoR, but that will work much better on other class combos…
Try searching the build subforum for ideas on what to do with a Templar.
Here’s the Templar section from the Build Compendium X (Forgotten Gods):