IMO, if you're an eladrin tactical warlord with the Spiral Tactician paragon path, you should multiclass into swordmage and take the Eladrin Swordmage Advance feat which allows you to make a melee basic attack as a free action when you fey step adjacent to an enemy. That's one free basic attack per encounter, or two if you spend an action point because your Second Step path feature allows you to regain fey step when you do so. That gives you pretty much the entire benefit of rain of blows without needing to hit, and you can pick another encounter power instead.