Stadium Megaliths enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Stadium Megaliths: Add or to your mana pool.
, : Target Troll gets +2/+0 until end of turn.
.
: Add 
or 
to your mana pool. or to your mana pool., : Target Troll gets +2/+0 until end of turn.
