Charging War Boar — ruling 1

Because damage remains marked on a creature until it’s removed as the turn ends, nonlethal damage dealt to Charging War Boar may become lethal if Domri leaves the battlefield during that turn.

Charging War Boar : règles, fonctionnement et interactions (MTG)

Charging War Boar 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

Haste (This creature can attack and as soon as it comes under your control.) As long as you control a Domri planeswalker, this creature gets +1/+1 and has trample. (It can deal excess damage to the player or planeswalker it's attacking.)

How it works : Charging War Boar

Original English text — Wizards of the Coast / Scryfall

#1January 25, 2019· Wizards of the Coast
Because damage remains marked on a creature until it’s removed as the turn ends, nonlethal damage dealt to Charging War Boar may become lethal if Domri leaves the battlefield during that turn.
No other card is named in this ruling.