Rotting-land enters the battlefield tapped unless you control four or more Black permanents.
: Add or to your mana pool.
Sacrifice Rotting-land: Add or to your mana pool.
, : Target Knight gets +1/+1 until end of turn.
: Add 
or 
to your mana pool. or to your mana pool., : Target Knight gets +1/+1 until end of turn.
