Airlock Laboratory G32

Airlock Laboratory G32 enters tapped and
you return one land to your hand.

{t}: Add {g} and one mana of any color.

This Airlocklaboratory was built in the
Monolith Garden Hotel so that the tree remains undamaged and fits into the complete airlock.
Trees have the positive properties that they filter air
in a natural way to support the airlock.