That's kinda true. You need others ninjas to support Konan.

I kept saying to people to get Konan and totally forgot that I already had Samehada for free in my team.

With Fire main's secret jutsu buffs.

You can keep using Shisui's mystery like Warrior Killing Intent as long as he kills a unit.

or you can do it with Lighting main. it's up to you, depends on your sage bracket.

I'd prefer fire, since there are too many immunity removal.

Even sealing jutsu is deadly. It's like a free Masked Man's ability, as long as you're faster.