I like to play around with dumb builds, and my arena score suffers from it. However here's a lil team that's gotten me a lot of wins, and I figured I'd share it.

The Goal: The aim of this team was just to stack as many buffs as possible on your team.

Scarlet Blaze: Dragon Flame Jutsu, Whatever Basic floats your boat, Celestial Prison, Fire Buff, and Clone, with Kamatari Summon.
You can choose whatever summon you like for the combo you're going for. I just like Prison-Kamatari-Prison. You get some nice damage to a single target, plust some calateral on top. Also this team is very vulnerable to cc, so spreading combos out isn't a dreadful idea.

Iruka: For that Mad Buff, and neato sheild. + a Clutch Interupt.

Anko: Don't see many builds with her in them, which I understand. She's a little niche. However with this team she works great, and is kind of the staple of the group. If she can get her Barrier up that's another +40 To your fire Attricute team. Plus when she finally spends the Barrier that's an interupt to the entire enemy team.

With their three powers combined, (Unless I'm missing a rule about Buffs not stacking :p) That's 3 40% Increases to Ninjutsu and Attack for your fire characters. Of course what you gain in buffs you trade in for almost Zero Chase between the three of them.

4th Choices:
Kurenai: From the playing around I've done here she's by far my favorite. I never run a team without at least 1 Genjutsu Mirrior so she fills that role nicely. Her Heal/Sheild is amazing when the enemy finally breaks through Iruka's sheild. Nothing tastes better than Anko racking up the hits(Read: Getting Buffs), being on the brink of death, only to gain most of her health back + A sheild. And When it goes off her Chakra gain ability is nice. And to top things off She manages to extend this teams pitiful Combo rate by one more. (Dragon Fire-Anko-Kurenai-Iruka)

Though the combo isn't great on this line up it's pretty solid damage. Even just standard attacks do pleny of damage.

Choji: At the start I though Akimichi Secret Applied to buffs as well as cures. Which almost made me lose my mind, because him gaining three buffs by gaining three buffs was ice cream with cake. However I was foild, and it wasn't meant to be. I like Choji as a character but his role in the team is minimal. The Damage he provides doesn't really make up for the Sheild you lose from Kurenai. He's great at clearing out Naruto clones, but this team has plenty of Aoe for that. However an entire row of buffed up damage is nothing to turn your nose up at.

---Non Leaf---
With these guys you lose out on Iruka's help. However I usually have Karin in the back where she's not missing the sheild too badly.

Karin: I hate that she manages to be good in most naruto games. She combos with Anko. However her poison is kind of wasted. You want anko's barrier launched first thing, so you lose out on that dot. However Anko's Chase usually gets Karin's Chase off. Of course everyone likes heals on top of that. She's my second choice if you're dropping Kurenai.

Sakon/Ukon. Dissapointingly Bad, in my opinion. They've got a gnarly Aoe. Combo with Anko giving you ignition, and Poison, yikes. Plus two attacks per round while on sterioids. It all sounds good, but I just can't get it to work. The Cost/Timing of Ras*n makes it pretty hard to play.

Tayuya: ¯\_(ツ)_/¯ Haven't played her, and I just can't imagine she'd be good. (For this team)

Hidan: P Good. It's hard to justify him being in the team though. He doesn't benifit from Iruka, or combo with Anko. You can replace Kamatari with a diffrent summon to get them to combo through. Which is solid high combo damage. I'd change Celestial Prison to Phoenix fire in that case. ;). Just got him, so I only have a few rounds under my belt with him.

---Non Fire---
Completely defeats the point of the team, Buuuuuuut:
Tenten: My love, my wife.
"But she's not fiiiiiire!"
True. But she benifits from Iruka, and gives everone extra crit. With as many buffs as we have? We like crits. Again she doesn't combo with Anko, however. (Clone Repulse-Tenten-Anko-tenten-Iruka.) Which leads to 4 critical hits XD

---Wish List---
Sarutobi: With him every ninja gives a buff, plus that Enma will more than make up for Kurenai's sheild.