Shifty Doppelganger
Creature — Shapeshifter
, Exile this creature: You may put a creature card from your hand onto the battlefield. If you do, that creature gains haste until end of turn. At the beginning of the next end step, sacrifice that creature. If you do, return this card to the battlefield.
Greg Staples
Odyssey (ODY)
• #101Rulings
This card has received errata such that putting a creature card from your hand onto the battlefield is now optional. This means you no longer need a third-party to verify that you don't have any creature cards in your hand if you don't put something onto the battlefield.
(wotc • 2008-08-01)
Putting the card onto the battlefield is optional. When the ability resolves, you can choose not to.
(wotc • 2007-05-01)
If the creature is not still on the battlefield at beginning of the End step, then you do not return this card to the battlefield.
(wotc • 2004-10-04)
Rulings
This card has received errata such that putting a creature card from your hand onto the battlefield is now optional. This means you no longer need a third-party to verify that you don't have any creature cards in your hand if you don't put something onto the battlefield.
(wotc • 2008-08-01)
Putting the card onto the battlefield is optional. When the ability resolves, you can choose not to.
(wotc • 2007-05-01)
If the creature is not still on the battlefield at beginning of the End step, then you do not return this card to the battlefield.
(wotc • 2004-10-04)