Stampeding Serow | Magic: The Gathering
Formats Stampeding Serow is Legal in
Official Oracle Text for Stampeding Serow
At the beginning of your upkeep, return a green creature you control to its owner's hand.
Official Rulings for Stampeding Serow
2/1/2014 : You choose a creature and return it all during resolution of the triggered ability. This means that if you control two of these, there is no way to end up returning only one creature.