Hi ! I have no particular experience playing with Lorna, so I'm just gonna go with a little lore text...
"When the troops gather on the battlefield for the last assault, they're all exhaust from their last actions. However, they see from the distance, in the back lane, Lorna Shine coming to help them. They know that with her, this magnificent redhead, nothing can defeat them. Her Divine Shield, provided directly from the gods, will give them their last precious victory!"

Thanks for your videos :)