Whenever Blackcleave Seafloor becomes tapped, it deals 1 damage to you.
: Add or to your mana pool.
Sacrifice Blackcleave Seafloor: Add or to your mana pool.
, , Sacrifice Blackcleave Seafloor: Target creature gets -2/-2 until end of turn.
: Add 
or 
to your mana pool. or to your mana pool., , Sacrifice Blackcleave Seafloor: Target creature gets -2/-2 until end of turn.
