(Blackcleave Woodlot isn't a spell.)
When Blackcleave Woodlot enters the battlefield, sacrifice it unless you pay 3 life.
, : Scry 2.
: Add or to your mana pool.
Sacrifice Blackcleave Woodlot: Add or to your mana pool.
, 
: Scry 2.: Add 
or 
to your mana pool. or to your mana pool.
