Cascade Tubes enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Cascade Tubes: Add or to your mana pool.
, , Sacrifice Cascade Tubes: Target creature gets -2/-2 until end of turn.
.
: Add 
or 
to your mana pool. or to your mana pool., , Sacrifice Cascade Tubes: Target creature gets -2/-2 until end of turn.
