Kar was approaching them with countless blood creatures surrounding them. Oren could use his mana to destroy the creatures, but he could not do the same against Kar with his gauntlet. According to Valeria, the gauntlet could redirect the energy Kar absorbs.
Rain helped Valeria stand in order to dispel the barrier. In the meantime, Oren needed to stop Kar and his minions from killing them.
"Are you sure you can do it?" Rain asked again with concern. "I can't face Arthur if something happens to you."
"Nothing is going to happen to me," Oren said with a grin as he released Lancelot. "I still have one more trump card."
Rain had to believe in him and carry Valeria toward the barrier. If there was one thing that could save them now, it would be the amplifier inside the barrier. Oren grinned as he clapped his hand and mana flared around him.