The way Knull works is that he absorbs the Power of all destroyed cards. There is no limit on how many times he can do that, and reviving cards like Deadpool will still buff Knull after each destruction. Clearly enough, his ideal lineup would be one from the destroy archetype. But finding the perfect synergies might be confusing. To help with that, this Marvel Snap guide explains how to build the top META deck for Knull using standard and rare cards.