At the beginning of your end step, if you didn't cast any spells this turn, Flagstones Slagheap deals 1 damage to you.
: Add 
or 
to your mana pool.
Put Flagstones Slagheap on top of your library: Add 
to your mana pool.
, Sacrifice Flagstones Slagheap: Add 
to your mana pool.
