What's your most effective team, made up of main set commons? No equipment or any other non-figure add-ons allowed.

250 points (two fitty), all carded figures allowed.

I've built several recently, and played a couple of them, but I'm looking for ideas.

Personally, I love my Star Trek figs, so I might try out something like this:

Force Build 12283308 0
Set	#	Name	Team	Pts	Value
TREKRF	006	Lt. Worf		60	SELL
TREKBG	001	Commander William T. Riker		50	SELL
EAX	002	Silver Sable		50	SELL
TREKOS	008	Klingon Lieutenant		45	SELL
SVC	005	Black Cat		40	SELL
BTAS	005	Suited Henchman		5	SELL
Force Total:				250	$0.00

Black Cat and Silver Sable can gain the Klingon keyword to give you theme, and the Lieutenant will give everyone Empower, meaning you can deal some serious damage with your close attacks.
There are probably a couple different permutations you could build of this team, but I think the Lieutenant is probably the most important piece here.

Good suggestion. I'll add this to my "possible roster" list.

This is the idea I'm presently considering for a tournament later this week. Non-modern get appropriate point discounts so this one adds up to exactly 250 points.

Force Build 12283468 0
Set	#	Name	Team	Pts	Value
F4	013A	Black Panther		60	SELL
DCFF	002V	Invisible Woman		20	SELL
FFFF	009	Thing Robot		20	SELL
FFFF	009	Thing Robot		20	SELL
FFFF	006	She-Hulk		75	SELL
DCFF	004V	Human Torch		20	SELL
FFFF	014	Valeria		20	SELL
AFFE	015	Onome		40	SELL
Force Total:				275	$0.00

One important factor is that Invisible woman and Human torch have selective knockback, and She-hulk's super strength brings even more knockback. This chaos and board control could bring lots of fun and excitement.

White tabs only, with no primes is one of my favorite formats. I actually like it better than Pulp, due to no highlander rule. Detective theme team with Leadership, Prob, Outwit, Perplex, 18 Defend, Passenger:4 taxi, TK, Empower, Enhancement and some stealth to block LoF.

Force Build 12283601 0
Set	#	Name	Team	Pts	Value
BTU	004	Fred		50	SELL
BTU	002	Scooby-Doo		50	SELL
BTU	009	Batgirl		45	SELL
NOT	003V	Batman		40	SELL
AV60	014	Jessica Jones		40	SELL
XMXS	002	Cypher		25	SELL
Force Total:				250	$0.00

Force Build 12283711 1
Set	#	Name	Team	Pts	Value
BSI	009	Siren		50	$2.70
Force Total:				50	$2.70

So I took the team above and when I got there I realized that only main set white tabs were allowed. No fast forces or microsets, like the "Deep Cuts" F4. Fortunately I had some backups, which is why I try to bring alternates and backups.

So I subbed out the two F4 Deep Cuts (Johnny and Sue) and subbed in the Siren from Bioshock. It still turned out to be a decent team, but the basic mechanic I was building for was the knockback Johnny and Sue generate.

I would still like to play that build at some point.

By the way, She-hulk landed one, count 'em ONE, hit the entire three round tournament, and two crit misses. But hey, I got the van!