Taste of Blood — ruling 1

If the player is an illegal target when Taste of Blood tries to resolve, Taste of Blood won’t resolve and none of its effects will happen. You won’t gain life.

Taste of Blood : règles, fonctionnement et interactions (MTG)

Taste of Blood 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

Taste of Blood deals 1 damage to target player or planeswalker and you gain 1 life.

How it works : Taste of Blood

Original English text — Wizards of the Coast / Scryfall

#1September 22, 2011· Wizards of the Coast
If the player is an illegal target when Taste of Blood tries to resolve, Taste of Blood won’t resolve and none of its effects will happen. You won’t gain life.
No other card is named in this ruling.