When Grass-Glen enters the battlefield, return a land you control to its owner's hand.
: Add to your mana pool. Return Grass-Glen to its owner's hand.
: Grass-Glen becomes a 2/2 green Bear creature until end of turn. It's still a land.
: Add 
to your mana pool. Return Grass-Glen to its owner's hand.
: Grass-Glen becomes a 2/2 green Bear creature until end of turn. It's still a land.
