Flagstones Tubes enters the battlefield tapped unless you pay .
: Add to your mana pool. Flagstones Tubes doesn't untap during your next untap step.
, : Target Knight gets +1/+1 until end of turn.
.
: Add 
to your mana pool. Flagstones Tubes doesn't untap during your next untap step., : Target Knight gets +1/+1 until end of turn.
