Helinburg, the Forsaken Church

Helinburg can be your commander.
Helinburg enters the battlefield tapped
{1}{t}: add {w}{b}
Whenever a human or land you control would
enter the graveyard from play put a retribution
counter on target creature an opponent controls.
{w/b}{w/b}{t}: gain control of all creatures with retribution counters on them
"It sings no hymns now"