yesnomu
First Post
Not even a bit: The Warden can't punish shifting. Granted, they can prevent it with some guardian forms...According to the compendium, Nature's Wrath is a free action. So they can mark multiple opponents and attack one of them with a str vs fort attack when they attack an ally. It sounds like the warden's marking ability is alot better than even the fighters ability.
I've played Shielding and Assault Swordmages, and they were both fun. As noted, the optimal strategy is to mark one enemy and then go off and attack another--one reason Assaultmages are not quite as good as their shielding brethren is that they have to leave the enemy they're attacking at the moment to go punish their marked target.
In contrast, playing a shielding swordmage can feel like cheating at times, it works so well. My DM became very... bothered... when I informed him that my mark never went away, no matter how far away I went. His poor, useless elite...