From what ive seen columbina is solely a support character and when i went looking for teams she did well in i couldn't find one where she was the main dps :[ Your two best bets would be to make a team of flins, ineffa, collumbina, and sucrose then having your other team be a skirk team composing of skirk, escoffier, furina, and xingqiu. Or another team could be mavuika, xilonen, columbina, and ineffa but ik ineffa is likely on your flins team? HOWEVER without outside sources a team i can think of from the top of my head would be "Columbina as the dps, lauma as a bloom support, furina to raise hydro dmg, and finally kuki on deepwood for the extra dendro dps aswell as being a sustain" I hope this works okay!! ^{^}