Gratleban, Diligent Worker

{w} {t}: Put a sweat counter on Gratleban, Diligent Worker.
Wall spells you cast cost {1} less to cast for
each sweat counter on Gratleban, Diligent
Worker.
As the stone does ring,
though broken, we can sing.
From dusk till dawn,
even as we yawn,
We carry on, with one more swing