bjorn2bwild said:I disagree here. I believe you have it reversed and nothing in TWFl overrides HBO.
That's an impossible statement, because TWFl has the specific requirement of making an OA with your off-hand weapon. HBO doesn't countermand that requirement, so it still applies. The OA you make has to be an attack with your off-hand weapon, whether it's a melee basic attack or an at-will power.
TWFl is triggered when a successful opportunity attack is made with your primary weapon. It does not simply allow you to make an opportunity attack with your off hand. What it does do is allow you to make an extra opportunity attack (with your off hand weapon). Note that this does break the normal rules regarding opportunity attacks.
Ummm....what? TWFl does not allow you to make an OA with your off-hand attack, it allows you to make an OA with your off-hand weapon? You just contradicted yourself completely.
Now, HBO, on the other hand allows you to use, for an opportunity attack, an at-will instead of a basic attack.
Yes, but the attack still has to be made with your off-hand weapon. If I have a feat that gives me an extra attack when I use an axe, I can't choose to attack with an implement power instead, and if I have a feat that lets me make an extra attack with my off-hand weapon, I have to attack with my off-hand weapon.
In this case, we're going to use twin strike as the at-will that substitutes for a basic attack.
Only half of Twin Strike meets the requirement of the TWFl feat. If you try to use Twin Strike as the at-will substitute, you'd only get the one off-hand attack, because Twin Strike specifically says you make one attack with your primary weapon and one with your off-hand weapon.
Now, in order for TWFl to trigger, we must ask two simple questions.
First, is an attack with the character's primary weapon found in the power twin strike. And the answer is yes.
Second, did that attack successfully hit the target? If the answer to both questions is yes, then TWFl triggers and an extra attack roll is made (at -5) using the off hand weapon.
What are you talking about here? The two questions we have to ask regarding TWFl triggering are "are you armed with two melee weapons" and "did you hit with your OA?" Heavy Blade Opportunist absolutely allows you to swap out your primary weapon OA for Twin Strike, and if at least one of those attacks hits, you get a second OA with your off-hand weapon. HBO lets you replace that OA with an at-will attack, but that at-will attack still has to be with your off-hand weapon. Twin Strike is one attack with your off-hand and one attack with your primary. Only the off-hand attack is valid with TWFl.
It sounds bad, but it's really not any more powerful than TWFl without twin strike. Remember, twin strike does not add in STR to damage. It's slightly more damage than normal, but not that much.
It's four attacks for the price of two--Str bonus isn't that huge, and you still tack on enhancement bonuses, feat bonuses, etc. It can get pretty bad. I think you're arguing something that isn't what RigaMortus2 originally proposed and isn't what I'm arguing against.
Another thing I just thought of...
HBO allows you to use an at will instead of a basic attack for an opportunity attack.
TWFL let's you get off an extra opportunity attack. If you combine the two, would you be able to use an at will power for that extra opportunity attack, provided you have a heavy blade in your off hand?
This is the point we've been debating, specifically how it relates to Twin Strike. The answer is yes, you can use HBO to replace the extra OA from TWFl with an at-will attack, but once again the at-will attack has to be made with your off-hand weapon. Twin Strike is one attack with both weapons, and is therefore not able to be used with TWFl (in my opinion, at least). Any other at-will attack that uses the weapon in your off-hand is a valid replacement, though.