Eternal Pressure

As an additional cost to cast this spell, exile any
number of nonartifact creatures from your
graveyard.
For each creature exiled this way, choose a land
you control. Put 2 Methane Counters on each of
those lands. Exile this card.
Though the Earth does replenish these reserves,
it takes too long. The center cannot hold.
- Anti-natural gas activist.