Corrupted Soil

Whenever enchanted land is tapped, it's controller
adds an additional {b} and puts a charge counter
on enchanted land. At the beginning of your end
step sacrifice enchanted land if it has three or
more charge counters on it.

One of the few known ways to combat the Void is to
starve it. With no organic or magical sustenance nearby,
the Void's material growth will slow, until it eventually
falls into a dormant state.