Ok this depends. If there’s no AD in the base then you don’t have to kill the valk. Lure the cc troops to the corner and on the way there just kill the accompanying archers / wizards and don’t worry about the valk. Drop a distracter barb near the closest archer tower immediately followed by your cc full of 2 max loons which will wreck the base. Once your loons clear the defenses, use a bars to lure the valk close to your loons if you want and the loons will target the valk.
If there is an AD in the base then you need to kill the valk. As a TH3 you should be packing (50) level 2 archers and (20) level 2 barbs into war. Lure the valk to the corner and do a circle kill and it will go down. If you’re really good (like me) you can use a little trick where you keep the valk in the center of the circle immobilized by timing a barb drop a split second after she swings and before she starts to move again. She will keep targeting the new barb as your archer ring cuts her to ribbons.
Be sure to kill the cc on the side of the base where the AD is located so your archers will engage the AD after the CC. AD goes down, again distract archer with barb and drop loons.






