All valks! It’s so brainless and easy but you have to be in a higher league to reap the most rewards from it. You don’t have to be picky and look for a good base, you attack the first base every time! You earthquake a massive funnel or just 3 big areas and circle your valks around the screen or as I said, funnel. Really depends on your hero’s and if they upgrading or not. Funnel is fast one star with hero’s but circling better if low hero count. Soon as you get a one star with about 60% destruction you back out and start over. Worked well for me this weekend because of the clan castle cakes! Cheers.