Obvious contender would be his brother, Kinkaku. Other ninjas that combo with him are; Kakashi, Sasuke, Choza, Zabuza, Suigetsu. Summon would be any summon that chases their chases into knockdown to give Kinkaku his second chase.

i use this lineup,works well in arena;haven't tried it outside of it(since cultivation is a pain)(also two 2stars ninjas aren't the best of ideas)

x x x

sasuke x gnw hinata

fire main ginkaku x

smmon flood dragon and the talents being 4-4-4-2-1

makes a sick combo but is limited on starting it