When Green Megaliths enters the battlefield, sacrifice it unless you pay .
: Add to your mana pool. Return Green Megaliths to its owner's hand.
: Green Megaliths becomes a 2/1 green and red Stag creature until end of turn. It's still a land.
.
: Add 
to your mana pool. Return Green Megaliths to its owner's hand.: Green Megaliths becomes a 2/1 green and red Stag creature until end of turn. It's still a land.
