What part of this is not... good?
The part where you're touting how two level 30 characters are as good as a single level 13 Ranger power, daily or no.
Not as good... better. It's a level 15 daily power, and doesn't really kick into the extremes without a build designed for it and in epic levels (Epic Trickster). Yes, Blade Cascade is ridiculous, and yes, even without much optimization (but a little set-up) it does way more damage than a level 15 power should, but it doesn't even approach the level of this without a good setup, and that's only for
one round. My combo trivializes
all monsters in
all encounters because of its ease of use. In one turn, it'll probably do less damage, but it can be used over and over, against all monsters, and on each Warlord's turn. I'm not proposing my build as something that should be built for, mainly because
there is no build. It requires only that there are two Tactical (preferably) Warlords that have this single encounter power, and then they can pull this off every turn they get. Not once a day, every turn. Sure, it only kicks in once level 30 hits, but how is that insignificant? Archmage's Archspell only kicks in once level 30 comes around, and yet people plan combos around assuming that they have it. You yourself mentioned Elven Accuracy, which I assume you were combining with Divine Miracle, the
30th level Demigod ability? I've seen many discussions about using Divine Miracle, and abusing it. Do you think those are ridiculous for their required 30th level as well? If not, why is mine different? In any case, the point is: Once you get there, you win. There's no convoluted build at all, you don't have to try at all, you just get it and suddenly, encounters are trivial. There is no point to the idea other than that. You can make whatever kind of build you want in between, making synergies as you see fit (Warlords are good at that, especially the tactical ones.) If you want, I can give you a full build of a Tactical Warlord (I'm building one for my game), but that's not the point. I'm saying that this is an extremely easy to get, extremely flexible, extremely resource-independent combo.