Duel Decks: Venser vs. Koth

Aether Membrane

Defender
Reach (This creature can block creatures with flying.)
Whenever Æther Membrane blocks a creature, return that creature to its owner's hand at end of combat.

Defender; reach (This creature can block creatures with flying.)
Whenever Aether Membrane blocks a creature, return that creature to its owner's hand at end of combat.

Planar Chaos

Defender
Æther Membrane can block as though it had flying.
Whenever Æther Membrane blocks a creature, return that creature to its owner's hand at end of combat.