Reena, Ruin Explorer

: Excavate - When Reena enters the battlefield, you may sacrifice a Ruin you control. If you do, create 3 1/1 white Survivor creature tokens.
+2: Create an artifact token Ruin called Ancient Ruin
-3: Return a Ruin from your graveyard to the battlefield, or sacrifice a land you control and put a Ruin from your hand onto the battlefield.