Lumra, Bellow of the Woods 
Legendary Creature — Elemental Bear
Vigilance, reach Lumra's power and toughness are each equal to the number of lands you control. When Lumra enters, mill four cards. Then return all land cards from your graveyard to the battlefield tapped.
Legality
standardLEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL