Cinderheart Giant — ruling 1

The creature an opponent controls isn’t targeted, so it’s chosen as the triggered ability resolves. A creature with hexproof could be chosen, as could a creature with protection from red, although, in the latter case, the damage would be prevented.

Cinderheart Giant : règles, fonctionnement et interactions (MTG)

Cinderheart Giant 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

Trample When this creature dies, it deals 7 damage to a creature an opponent controls chosen at random.

How it works : Cinderheart Giant

Original English text — Wizards of the Coast / Scryfall

#1February 5, 2021· Wizards of the Coast
The creature an opponent controls isn’t targeted, so it’s chosen as the triggered ability resolves. A creature with hexproof could be chosen, as could a creature with protection from red, although, in the latter case, the damage would be prevented.
No other card is named in this ruling.