Stalking Yeti — ruling 1

If either Stalking Yeti or the targeted creature is no longer on the battlefield when the "enters" triggered ability resolves, the ability does nothing.

Stalking Yeti : règles, fonctionnement et interactions (MTG)

Stalking Yeti is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

When this creature enters, if it's on the battlefield, it deals damage equal to its power to target creature an opponent controls and that creature deals damage equal to its power to this creature. : Return this creature to its owner's hand. Activate only as a sorcery. ( can be paid with one mana from a snow source.)

How it works : Stalking Yeti

Original English text — Wizards of the Coast / Scryfall

#1July 15, 2006· Wizards of the Coast
If either Stalking Yeti or the targeted creature is no longer on the battlefield when the "enters" triggered ability resolves, the ability does nothing.
No other card is named in this ruling.