Great Wall of China

Great Wall of China enters the battlefield tapped.
When Great Wall of China enters the battlefield,
return a land you control to its owner's hand.

{t}: Add {r}{w}, {g}{w}, or {r}{g}.

{2}{r}{w}{g}: Great Wall of China becomes a 2/6 Legendary Artifact Creature with Defender
until the end of turn. It is still a land.