Aethersnipe
Creature — Elemental
When this creature enters, return target nonland permanent to its owner's hand.
Evoke 
(You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters.)
Zoltan Boros & Gabor Szikszai
The List (PLST)
• #MM2-39Rulings
Aethersnipe can be the target of its own ability. If it's the only nonland permanent on the battlefield, it must be the target of its ability.
(wotc • 2018-12-07)
If you cast this card for its evoke cost, you may put the sacrifice trigger and the regular enters-the-battlefield trigger on the stack in either order. The one put on the stack last will resolve first.
(wotc • 2013-04-15)
Rulings
Aethersnipe can be the target of its own ability. If it's the only nonland permanent on the battlefield, it must be the target of its ability.
(wotc • 2018-12-07)
If you cast this card for its evoke cost, you may put the sacrifice trigger and the regular enters-the-battlefield trigger on the stack in either order. The one put on the stack last will resolve first.
(wotc • 2013-04-15)