Totally in favor of this at a glance. Simple, gives as a niche, instead of making us a carbon copy of WAR and PLD.

Still a bit dicey on the mitigation side though, and makes oGCD congestion in our rotation even worse. C&S DA effect into the base, having it instead cost 1200-2400 mana as a baseline, that'd be helpful. Cut Plunge's animation lock significantly.

For mitigation I would at the bare minimum have DM work on all damage, and remove its DA effect to compensate.