From any clan war a player can be made MVP. This title, when awarded, is carried over to the next war, where on the war map their clan castle has a banner indicating so. Possible award for MVP when awarded for the war... perhaps 1.5x loot received from the clan war.
Up to you the developer how this is awarded. But assuming that the amount of loot awarded for attack is dependent on the base, i'm thinking that the person with the highest score should be awarded MVP MVP, where MVPscore=(awarded loot)/(2*loot value of your base)*number of stars collected*(number of people in war-your position on clan map)(maybe) This may not be fair though so obviously not sure how this would be implemented. This would encourage attacking higher to get MVP but also could put your clan at a disadvantage due to attacking to high.
Concept image of clan castle after being awarded MVP attached. MVP.jpg





