Unfortunately creature battles arent that common in constructed (of course in some metagames...)
I think blockers arent a major problem. You can get througt with spirit en-kor, dawn elemental, something enchanted with cho-mannos blessing, or kill hes creatures with wave of reckoning. Wall of souls is good and fun, but wall of hope is cheaper, gives lifes for all kinds of damage, and is white.
Best reason for playing e-kors:
you have an excuse for playing personal incarnation!