Fallen angel brothers

Castiel found out he has powers

As Castiel walked through the halls to his father's throne, he was nervous at the same time he was curious what is his father wanted from him? He sighed to himself and kept walking without realising his four brothers sneked behind him as they followed him. 

Now Castiel was in his fathers' room and he greeted him with full respect. "Father, you have called me?". His father nodded as he walked towards Castiel and ruffled his hair. "So mind telling me why you have called me?".The others were sitting behind the door, trying to hear their conversation but failed because his father set up sound proof doors. 

Gabriel:"Damn, couldn't hear a thing."

Michael:"I guess father has other plans for Castiel".

Lucifer:"Hmph, maybe you're right. He's making Castiel stronger than you I guess".

Balthazar:"We all have to wait then".

Lucifer:"Fine, I'll be joing you later. I need some rest".

After Lucifer left, all the three of them sitted at their garden bench as they waited. "So, Castiel. I'm going to train you to be an archangel warrior. Are you ready?". Castiel hesitated at first but he was always ready. "Yes, I'll do my best. So as usual, giving an angel blade and fight?". His father just let out a chuckled as Castiel pouted."No Castiel, you're special. When you were born, I had placed something in you that 40% in you is your 4 brothers' powers. 10% michael's intelligence, 10% Lucifer's sharpness, 10% Balthazar's speed and 10% Gabriel's flying skills". All Castiel's reaction was mind blown. 

"Father, I do not know what to say, but then-", "Do not worry Castiel, I did not reduce theirs, I kept it for special angel and that was you. The rest of your powers are natural Lightning and strength. You have all the control of it, just do not use too much as your grace can affect you, that is the reason I have called you. I am going to teach you how to use them especially the Angel blade. Your Angel blade is special, with the combination of your lightning, you may increase its sharpness as lucifer's, and longer unlike your brother and sisters have". Castiel nodded as he was a little happy angd grateful. Castiel left the room and oh boy, he looked happy because finally he will be in action like his family.