(: Add or to your mana pool.)
At the beginning of your end step, if you didn't cast any spells this turn, Fetid Ruins deals 1 damage to you.
, : Target player puts the top card of his or her library into his or her graveyard.
: Add 
or 
to your mana pool.), : Target player puts the top card of his or her library into his or her graveyard.
