The vsliant claydol core is strong, being able to snipe ohko's really fast and easy, while sacrificing a prize card, but in my testing, it needs to get at least one honnest knock out to keep pace. Typhlosion is potentially the answer. Iron vsliant can set a pokemon to 4 damage counters in 2 switches and the v-star attack can ohko for free.
Proxies are vip being buddy poffin and the helmet being survival braces.