Again, you miss the very basic premise: taking damage can be bad if the DM makes them pay for taking extra damage.
And again, you miss the very basic premise: 20 damage to a level 13 barbarian is barely a drop in the bucket, especially when you're trading that 20 damage for the ability to kill BETWEEN ONE AND TWO monsters of your level.
Your Barbarian attack also is buffed.
If one feat is "buffed", then you are correct. In that case every single character ever is buffed at all times.
Well, make that 1 power, 1 weapon, a particular race and racial feat (though the racial feat is pretty much a must have), a particular build and stat distribution and it only works 1/2 encounters. That a possible example of a broken combo, as independently, its harder to argue that each thing is broken on its own.
Um...yeah, basically. I think Action Surge is the most powerful feat in the entire game. By flanking and using Action Surge, you create "dont' roll a 1" scenario with an optimized character. Throw in leader buffs, and you've created it for even non-optimized characters.
Even without the 5 attacks you can still inflict significantly more damage with this weapon than without it. But seriously. Just because you can only do something every other fight doesn't mean it's not broken. Because it is. I'm here to tell you that a level 13 striker taking out two fresh level 13 soldiers is kind of possibly not what was intended by the game.
He's a human. He does not need outside buffing; he gets +3 to attacks on an action point as a racial ability. (Okay, technically it's a racial bonus feat which is spent on Action Surge because any human in his/her right mind grabs Action Surge ASAP.)
And my experience with Bloodclaw is similar; two-handed Bloodclaw weapons are too good for the drawback. I house-rule that Bloodclaw does not get bonus damage for being wielded 2-handed, and that brings it down to an acceptable level - very powerful, but not a "gimme." People actually have to think about whether to use Bloodclaw, instead of just cranking it out on every attack.
Yeah...honestly Action Surge should have been the human racial power. If you don't take that feat, you:
-didn't know about it
-are stupid
-didn't take it on purpose to make the game more challenging for yourself
That's not a bad fix to Bloodclaw, either.
I looked into this, and I don't think it technically works this way. Bloodclaw requires a free action to use, and only applies to the next attack you make. Storm of blows, and for that matter all other sequential hit powers, counts as multiple attacks. Unless you can break up your standard action, you'll only be able to get the bloodclaw bonus on one attack. Even if you can slip the free actions in, the definition of a free action specifically says the DM can restrict the number of free actions you can take in one turn.
I could be wrong on the action sandwich thing, but as a DM I would certainly rule on the number of free actions you can take.
Yeah...but then you're limiting other people from taking a certain number of other free actions that are not unbalancing (I can't think of any examples, but I'm sure that some exist). Artificial limitations are just that. You don't limit number of free actions because one weapon screwed it all up. It's not that having that many free actions is powerful; it's that the action in question probably should have been a minor.
That said, this is not how the item works. You get to take this free action before each attack. It's not per action. It clearly states "per attack". That's why the item is so broken.
I ruled (and I belive this was based eaither on my interp of a rule, or a desinger blog...) that you can not take one action in the middle of another.
You can absolutely take one action in the middle of another. When someone walks past you, you can smack them with your sword. There's like 50 powers that do nothing except interrupt actions. And it's not because it has a special name. Dragons, when bloodied, immediately recharge their breath weapons and use them as free actions. You can free action even on someone else's turn, in the middle of their action. Why wouldn't you be able to free action in the middle of your own action?
So what you're telling me is that in your games, your players can't shout in the middle of an attack, because shouting is a free action, and that would be taking one action in the middle of another? Sounds kinda mechanical to me. =P