Vraska's Contempt — ruling 1

There are many important moments in the story, but the most crucial—called “story spotlights”—are shown on cards. These cards have the Planeswalker symbol in their text box; this symbol has no effect on gameplay. You can read more about these events in the official Magic fiction at http://www.mtgstory.com.

Vraska's Contempt — ruling 2

If the target creature or planeswalker is an illegal target by the time Vraska’s Contempt resolves, the entire spell doesn’t resolve. You won’t gain life.

Vraska's Contempt : règles, fonctionnement et interactions (MTG)

Vraska's Contempt 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

Exile target creature or planeswalker. You gain 2 life.

How it works : Vraska's Contempt

Original English text — Wizards of the Coast / Scryfall

#1January 19, 2018· Wizards of the Coast
There are many important moments in the story, but the most crucial—called “story spotlights”—are shown on cards. These cards have the Planeswalker symbol in their text box; this symbol has no effect on gameplay. You can read more about these events in the official Magic fiction at http://www.mtgstory.com.
No other card is named in this ruling.
#2September 29, 2017· Wizards of the Coast
If the target creature or planeswalker is an illegal target by the time Vraska’s Contempt resolves, the entire spell doesn’t resolve. You won’t gain life.
No other card is named in this ruling.