(Mire Seafloor isn't a spell.)
Mire Seafloor enters the battlefield tapped.
, : Scry 2.
: Add or to your mana pool. Mire Seafloor deals 2 damage to you.
, 
: Scry 2.: Add 
or 
to your mana pool. Mire Seafloor deals 2 damage to you.
